Add dateutil library

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angelblue05 2018-12-30 19:30:50 -06:00
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import requests
import dateutil

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Copyright 2017- Paul Ganssle <paul@ganssle.io>
Copyright 2017- dateutil contributors (see AUTHORS file)
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
The above license applies to all contributions after 2017-12-01, as well as
all contributions that have been re-licensed (see AUTHORS file for the list of
contributors who have re-licensed their code).
--------------------------------------------------------------------------------
dateutil - Extensions to the standard Python datetime module.
Copyright (c) 2003-2011 - Gustavo Niemeyer <gustavo@niemeyer.net>
Copyright (c) 2012-2014 - Tomi Pieviläinen <tomi.pievilainen@iki.fi>
Copyright (c) 2014-2016 - Yaron de Leeuw <me@jarondl.net>
Copyright (c) 2015- - Paul Ganssle <paul@ganssle.io>
Copyright (c) 2015- - dateutil contributors (see AUTHORS file)
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
* Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
The above BSD License Applies to all code, even that also covered by Apache 2.0.

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Version 2.7.3 (2018-05-09)
==========================
Data updates
------------
- Update tzdata to 2018e. (gh pr #710)
Bugfixes
--------
- Fixed an issue where decimal.Decimal would cast `NaN` or infinite value in a
parser.parse, which will raise decimal.Decimal-specific errors. Reported and
fixed by @amureki (gh issue #662, gh pr #679).
- Fixed a ValueError being thrown if tzinfos call explicity returns ``None``.
Reported by @pganssle (gh issue #661) Fixed by @parsethis (gh pr #681)
- Fixed incorrect parsing of certain dates earlier than 100 AD when repesented
in the form "%B.%Y.%d", e.g. "December.0031.30". (gh issue #687, pr #700)
- Fixed a bug where automatically generated DTSTART was naive even if a
specified UNTIL had a time zone. Automatically generated DTSTART will now
take on the timezone of an UNTIL date, if provided. Reported by @href (gh
issue #652). Fixed by @absreim (gh pr #693).
Documentation changes
---------------------
- Corrected link syntax and updated URL to https for ISO year week number
notation in relativedelta examples. (gh issue #670, pr #711)
- Add doctest examples to tzfile documentation. Done by @weatherpattern and
@pganssle (gh pr #671)
- Updated the documentation for relativedelta. Removed references to tuple
arguments for weekday, explained effect of weekday(_, 1) and better explained
the order of operations that relativedelta applies. Fixed by @kvn219
@huangy22 and @ElliotJH (gh pr #673)
- Added changelog to documentation. (gh issue #692, gh pr #707)
- Changed order of keywords in rrule docstring. Reported and fixed by
@rmahajan14 (gh issue #686, gh pr #695).
- Added documentation for ``dateutil.tz.gettz``. Reported by @pganssle (gh
issue #647). Fixed by @weatherpattern (gh pr #704)
- Cleaned up malformed RST in the ``tz`` documentation. (gh issue #702, gh pr
#706)
- Changed the default theme to sphinx_rtd_theme, and changed the sphinx
configuration to go along with that. (gh pr #707)
- Reorganized ``dateutil.tz`` documentation and fixed issue with the
``dateutil.tz`` docstring. (gh pr #714)
Misc
----
- GH #674, GH #688, GH #699
Version 2.7.2 (2018-03-26)
==========================
Bugfixes
--------
- Fixed an issue with the setup script running in non-UTF-8 environment.
Reported and fixed by @gergondet (gh pr #651)
Misc
----
- GH #655
Version 2.7.1 (2018-03-24)
===========================
Data updates
------------
- Updated tzdata version to 2018d.
Bugfixes
--------
- Fixed issue where parser.parse would occasionally raise
decimal.Decimal-specific error types rather than ValueError. Reported by
@amureki (gh issue #632). Fixed by @pganssle (gh pr #636).
- Improve error message when rrule's dtstart and until are not both naive or
both aware. Reported and fixed by @ryanpetrello (gh issue #633, gh pr #634)
Misc
----
- GH #644, GH #648
Version 2.7.0
=============
- Dropped support for Python 2.6 (gh pr #362 by @jdufresne)
- Dropped support for Python 3.2 (gh pr #626)
- Updated zoneinfo file to 2018c (gh pr #616)
- Changed licensing scheme so all new contributions are dual licensed under
Apache 2.0 and BSD. (gh pr #542, issue #496)
- Added __all__ variable to the root package. Reported by @tebriel
(gh issue #406), fixed by @mariocj89 (gh pr #494)
- Added python_requires to setup.py so that pip will distribute the right
version of dateutil. Fixed by @jakec-github (gh issue #537, pr #552)
- Added the utils submodule, for miscellaneous utilities.
- Added within_delta function to utils - added by @justanr (gh issue #432,
gh pr #437)
- Added today function to utils (gh pr #474)
- Added default_tzinfo function to utils (gh pr #475), solving an issue
reported by @nealmcb (gh issue #94)
- Added dedicated ISO 8601 parsing function isoparse (gh issue #424).
Initial implementation by @pganssle in gh pr #489 and #622, with a
pre-release fix by @kirit93 (gh issue #546, gh pr #573).
- Moved parser module into parser/_parser.py and officially deprecated the use
of several private functions and classes from that module. (gh pr #501, #515)
- Tweaked parser error message to include rejected string format, added by
@pbiering (gh pr #300)
- Add support for parsing bytesarray, reported by @uckelman (gh issue #417) and
fixed by @uckelman and @pganssle (gh pr #514)
- Started raising a warning when the parser finds a timezone string that it
cannot construct a tzinfo instance for (rather than succeeding with no
indication of an error). Reported and fixed by @jbrockmendel (gh pr #540)
- Dropped the use of assert in the parser. Fixed by @jbrockmendel (gh pr #502)
- Fixed to assertion logic in parser to support dates like '2015-15-May',
reported and fixed by @jbrockmendel (gh pr #409)
- Fixed IndexError in parser on dates with trailing colons, reported and fixed
by @jbrockmendel (gh pr #420)
- Fixed bug where hours were not validated, leading to improper parse. Reported
by @heappro (gh pr #353), fixed by @jbrockmendel (gh pr #482)
- Fixed problem parsing strings in %b-%Y-%d format. Reported and fixed by
@jbrockmendel (gh pr #481)
- Fixed problem parsing strings in the %d%B%y format. Reported by @asishm
(gh issue #360), fixed by @jbrockmendel (gh pr #483)
- Fixed problem parsing certain unambiguous strings when year <99 (gh pr #510).
Reported by @alexwlchan (gh issue #293).
- Fixed issue with parsing an unambiguous string representation of an ambiguous
datetime such that if possible the correct value for fold is set. Fixes
issue reported by @JordonPhillips and @pganssle (gh issue #318, #320,
gh pr #517)
- Fixed issue with improper rounding of fractional components. Reported by
@dddmello (gh issue #427), fixed by @m-dz (gh pr #570)
- Performance improvement to parser from removing certain min() calls. Reported
and fixed by @jbrockmendel (gh pr #589)
- Significantly refactored parser code by @jbrockmendel (gh prs #419, #436,
#490, #498, #539) and @pganssle (gh prs #435, #468)
- Implementated of __hash__ for relativedelta and weekday, reported and fixed
by @mrigor (gh pr #389)
- Implemented __abs__ for relativedelta. Reported by @binnisb and @pferreir
(gh issue #350, pr #472)
- Fixed relativedelta.weeks property getter and setter to work for both
negative and positive values. Reported and fixed by @souliane (gh issue #459,
pr #460)
- Fixed issue where passing whole number floats to the months or years
arguments of the relativedelta constructor would lead to errors during
addition. Reported by @arouanet (gh pr #411), fixed by @lkollar (gh pr #553)
- Added a pre-built tz.UTC object representing UTC (gh pr #497)
- Added a cache to tz.gettz so that by default it will return the same object
for identical inputs. This will change the semantics of certain operations
between datetimes constructed with tzinfo=tz.gettz(...). (gh pr #628)
- Changed the behavior of tz.tzutc to return a singleton (gh pr #497, #504)
- Changed the behavior of tz.tzoffset to return the same object when passed the
same inputs, with a corresponding performance improvement (gh pr #504)
- Changed the behavior of tz.tzstr to return the same object when passed the
same inputs. (gh pr #628)
- Added .instance alternate constructors for tz.tzoffset and tz.tzstr, to
allow the construction of a new instance if desired. (gh pr #628)
- Added the tz.gettz.nocache function to allow explicit retrieval of a new
instance of the relevant tzinfo. (gh pr #628)
- Expand definition of tz.tzlocal equality so that the local zone is allow
equality with tzoffset and tzutc. (gh pr #598)
- Deprecated the idiosyncratic tzstr format mentioned in several examples but
evidently designed exclusively for dateutil, and very likely not used by
any current users. (gh issue #595, gh pr #606)
- Added the tz.resolve_imaginary function, which generates a real date from
an imaginary one, if necessary. Implemented by @Cheukting (gh issue #339,
gh pr #607)
- Fixed issue where the tz.tzstr constructor would erroneously succeed if
passed an invalid value for tzstr. Fixed by @pablogsal (gh issue #259,
gh pr #581)
- Fixed issue with tz.gettz for TZ variables that start with a colon. Reported
and fixed by @lapointexavier (gh pr #601)
- Added a lock to tz.tzical's cache. Reported and fixed by @Unrud (gh pr #430)
- Fixed an issue with fold support on certain Python 3 implementations that
used the pre-3.6 pure Python implementation of datetime.replace, most
notably pypy3 (gh pr #446).
- Added support for VALUE=DATE-TIME for DTSTART in rrulestr. Reported by @potuz
(gh issue #401) and fixed by @Unrud (gh pr #429)
- Started enforcing that within VTIMEZONE, the VALUE parameter can only be
omitted or DATE-TIME, per RFC 5545. Reported by @Unrud (gh pr #439)
- Added support for TZID parameter for DTSTART in rrulestr. Reported and
fixed by @ryanpetrello (gh issue #614, gh pr #624)
- Added 'RRULE:' prefix to rrule strings generated by rrule.__str__, in
compliance with the RFC. Reported by @AndrewPashkin (gh issue #86), fixed by
@jarondl and @mlorant (gh pr #450)
- Switched to setuptools_scm for version management, automatically calculating
a version number from the git metadata. Reported by @jreback (gh issue #511),
implemented by @Sulley38 (gh pr #564)
- Switched setup.py to use find_packages, and started testing against pip
installed versions of dateutil in CI. Fixed issue with parser import
discovered by @jreback in pandas-dev/pandas#18141. (gh issue #507, pr #509)
- Switched test suite to using pytest (gh pr #495)
- Switched CI over to use tox. Fixed by @gaborbernat (gh pr #549)
- Added a test-only dependency on freezegun. (gh pr #474)
- Reduced number of CI builds on Appveyor. Fixed by @kirit93 (gh issue #529,
gh pr #579)
- Made xfails strict by default, so that an xpass is a failure. (gh pr #567)
- Added a documentation generation stage to tox and CI. (gh pr #568)
- Added an explicit warning when running python setup.py explaining how to run
the test suites with pytest. Fixed by @lkollar. (gh issue #544, gh pr #548)
- Added requirements-dev.txt for test dependency management (gh pr #499, #516)
- Fixed code coverage metrics to account for Windows builds (gh pr #526)
- Fixed code coverage metrics to NOT count xfails. Fixed by @gaborbernat
(gh issue #519, gh pr #563)
- Style improvement to zoneinfo.tzfile that was confusing to static type
checkers. Reported and fixed by @quodlibetor (gh pr #485)
- Several unused imports were removed by @jdufresne. (gh pr #486)
- Switched ``isinstance(*, collections.Callable)`` to callable, which is available
on all supported Python versions. Implemented by @jdufresne (gh pr #612)
- Added CONTRIBUTING.md (gh pr #533)
- Added AUTHORS.md (gh pr #542)
- Corrected setup.py metadata to reflect author vs. maintainer, (gh issue #477,
gh pr #538)
- Corrected README to reflect that tests are now run in pytest. Reported and
fixed by @m-dz (gh issue #556, gh pr #557)
- Updated all references to RFC 2445 (iCalendar) to point to RFC 5545. Fixed
by @mariocj89 (gh issue #543, gh pr #555)
- Corrected parse documentation to reflect proper integer offset units,
reported and fixed by @abrugh (gh pr #458)
- Fixed dangling parenthesis in tzoffset documentation (gh pr #461)
- Started including the license file in wheels. Reported and fixed by
@jdufresne (gh pr #476)
- Indendation fixes to parser docstring by @jbrockmendel (gh pr #492)
- Moved many examples from the "examples" documentation into their appropriate
module documentation pages. Fixed by @Tomasz-Kluczkowski and @jakec-github
(gh pr #558, #561)
- Fixed documentation so that the parser.isoparse documentation displays.
Fixed by @alexchamberlain (gh issue #545, gh pr #560)
- Refactored build and release sections and added setup instructions to
CONTRIBUTING. Reported and fixed by @kynan (gh pr #562)
- Cleaned up various dead links in the documentation. (gh pr #602, #608, #618)
Version 2.6.1
=============
- Updated zoneinfo file to 2017b. (gh pr #395)
- Added Python 3.6 to CI testing (gh pr #365)
- Removed duplicate test name that was preventing a test from being run.
Reported and fixed by @jdufresne (gh pr #371)
- Fixed testing of folds and gaps, particularly on Windows (gh pr #392)
- Fixed deprecated escape characters in regular expressions. Reported by
@nascheme and @thierryba (gh issue #361), fixed by @thierryba (gh pr #358)
- Many PEP8 style violations and other code smells were fixed by @jdufresne
(gh prs #358, #363, #364, #366, #367, #368, #372, #374, #379, #380, #398)
- Improved performance of tzutc and tzoffset objects. (gh pr #391)
- Fixed issue with several time zone classes around DST transitions in any
zones with +0 standard offset (e.g. Europe/London) (gh issue #321, pr #390)
- Fixed issue with fuzzy parsing where tokens similar to AM/PM that are in the
end skipped were dropped in the fuzzy_with_tokens list. Reported and fixed
by @jbrockmendel (gh pr #332).
- Fixed issue with parsing dates of the form X m YY. Reported by @jbrockmendel.
(gh issue #333, pr #393)
- Added support for parser weekdays with less than 3 characters. Reported by
@arcadefoam (gh issue #343), fixed by @jonemo (gh pr #382)
- Fixed issue with the addition and subtraction of certain relativedeltas.
Reported and fixed by @kootenpv (gh issue #346, pr #347)
- Fixed issue where the COUNT parameter of rrules was ignored if 0. Fixed by
@mshenfield (gh pr #330), reported by @vaultah (gh issue #329).
- Updated documentation to include the new tz methods. (gh pr #324)
- Update documentation to reflect that the parser can raise TypeError, reported
and fixed by @tomchuk (gh issue #336, pr #337)
- Fixed an incorrect year in a parser doctest. Fixed by @xlotlu (gh pr #357)
- Moved version information into _version.py and set up the versions more
granularly.
Version 2.6.0
=============
- Added PEP-495-compatible methods to address ambiguous and imaginary dates in
time zones in a backwards-compatible way. Ambiguous dates and times can now
be safely represented by all dateutil time zones. Many thanks to Alexander
Belopolski (@abalkin) and Tim Peters @tim-one for their inputs on how to
address this. Original issues reported by Yupeng and @zed (lP: 1390262,
gh issues #57, #112, #249, #284, #286, prs #127, #225, #248, #264, #302).
- Added new methods for working with ambiguous and imaginary dates to the tz
module. datetime_ambiguous() determines if a datetime is ambiguous for a given
zone and datetime_exists() determines if a datetime exists in a given zone.
This works for all fold-aware datetimes, not just those provided by dateutil.
(gh issue #253, gh pr #302)
- Fixed an issue where dst() in Portugal in 1996 was returning the wrong value
in tz.tzfile objects. Reported by @abalkin (gh issue #128, pr #225)
- Fixed an issue where zoneinfo.ZoneInfoFile errors were not being properly
deep-copied. (gh issue #226, pr #225)
- Refactored tzwin and tzrange as a subclass of a common class, tzrangebase, as
there was substantial overlapping functionality. As part of this change,
tzrange and tzstr now expose a transitions() function, which returns the
DST on and off transitions for a given year. (gh issue #260, pr #302)
- Deprecated zoneinfo.gettz() due to confusion with tz.gettz(), in favor of
get() method of zoneinfo.ZoneInfoFile objects. (gh issue #11, pr #310)
- For non-character, non-stream arguments, parser.parse now raises TypeError
instead of AttributeError. (gh issues #171, #269, pr #247)
- Fixed an issue where tzfile objects were not properly handling dst() and
tzname() when attached to datetime.time objects. Reported by @ovacephaloid.
(gh issue #292, pr #309)
- /usr/share/lib/zoneinfo was added to TZPATHS for compatibility with Solaris
systems. Reported by @dhduvall (gh issue #276, pr #307)
- tzoffset and tzrange objects now accept either a number of seconds or a
datetime.timedelta() object wherever previously only a number of seconds was
allowed. (gh pr #264, #277)
- datetime.timedelta objects can now be added to relativedelta objects. Reported
and added by Alec Nikolas Reiter (@justanr) (gh issue #282, pr #283
- Refactored relativedelta.weekday and rrule.weekday into a common base class
to reduce code duplication. (gh issue #140, pr #311)
- An issue where the WKST parameter was improperly rendering in str(rrule) was
reported and fixed by Daniel LePage (@dplepage). (gh issue #262, pr #263)
- A replace() method has been added to rrule objects by @jendas1, which creates
new rrule with modified attributes, analogous to datetime.replace (gh pr #167)
- Made some significant performance improvements to rrule objects in Python 2.x
(gh pr #245)
- All classes defining equality functions now return NotImplemented when
compared to unsupported classes, rather than raising TypeError, to allow other
classes to provide fallback support. (gh pr #236)
- Several classes have been marked as explicitly unhashable to maintain
identical behavior between Python 2 and 3. Submitted by Roy Williams
(@rowillia) (gh pr #296)
- Trailing whitespace in easter.py has been removed. Submitted by @OmgImAlexis
(gh pr #299)
- Windows-only batch files in build scripts had line endings switched to CRLF.
(gh pr #237)
- @adamchainz updated the documentation links to reflect that the canonical
location for readthedocs links is now at .io, not .org. (gh pr #272)
- Made some changes to the CI and codecov to test against newer versions of
Python and pypy, and to adjust the code coverage requirements. For the moment,
full pypy3 compatibility is not supported until a new release is available,
due to upstream bugs in the old version affecting PEP-495 support.
(gh prs #265, #266, #304, #308)
- The full PGP signing key fingerprint was added to the README.md in favor of
the previously used long-id. Reported by @valholl (gh issue #287, pr #304)
- Updated zoneinfo to 2016i. (gh issue #298, gh pr #306)
Version 2.5.3
=============
- Updated zoneinfo to 2016d
- Fixed parser bug where unambiguous datetimes fail to parse when dayfirst is
set to true. (gh issue #233, pr #234)
- Bug in zoneinfo file on platforms such as Google App Engine which do not
do not allow importing of subprocess.check_call was reported and fixed by
@savraj (gh issue #239, gh pr #240)
- Fixed incorrect version in documentation (gh issue #235, pr #243)
Version 2.5.2
=============
- Updated zoneinfo to 2016c
- Fixed parser bug where yearfirst and dayfirst parameters were not being
respected when no separator was present. (gh issue #81 and #217, pr #229)
Version 2.5.1
=============
- Updated zoneinfo to 2016b
- Changed MANIFEST.in to explicitly include test suite in source distributions,
with help from @koobs (gh issue #193, pr #194, #201, #221)
- Explicitly set all line-endings to LF, except for the NEWS file, on a
per-repository basis (gh pr #218)
- Fixed an issue with improper caching behavior in rruleset objects (gh issue
#104, pr #207)
- Changed to an explicit error when rrulestr strings contain a missing BYDAY
(gh issue #162, pr #211)
- tzfile now correctly handles files containing leapcnt (although the leapcnt
information is not actually used). Contributed by @hjoukl (gh issue #146, pr
#147)
- Fixed recursive import issue with tz module (gh pr #204)
- Added compatibility between tzwin objects and datetime.time objects (gh issue
#216, gh pr #219)
- Refactored monolithic test suite by module (gh issue #61, pr #200 and #206)
- Improved test coverage in the relativedelta module (gh pr #215)
- Adjusted documentation to reflect possibly counter-intuitive properties of
RFC-5545-compliant rrules, and other documentation improvements in the rrule
module (gh issue #105, gh issue #149 - pointer to the solution by @phep,
pr #213).
Version 2.5.0
=============
- Updated zoneinfo to 2016a
- zoneinfo_metadata file version increased to 2.0 - the updated updatezinfo.py
script will work with older zoneinfo_metadata.json files, but new metadata
files will not work with older updatezinfo.py versions. Additionally, we have
started hosting our own mirror of the Olson databases on a github pages
site (https://dateutil.github.io/tzdata/) (gh pr #183)
- dateutil zoneinfo tarballs now contain the full zoneinfo_metadata file used
to generate them. (gh issue #27, gh pr #85)
- relativedelta can now be safely subclassed without derived objects reverting
to base relativedelta objects as a result of arithmetic operations.
(lp:1010199, gh issue #44, pr #49)
- relativedelta 'weeks' parameter can now be set and retrieved as a property of
relativedelta instances. (lp: 727525, gh issue #45, pr #49)
- relativedelta now explicitly supports fractional relative weeks, days, hours,
minutes and seconds. Fractional values in absolute parameters (year, day, etc)
are now deprecated. (gh issue #40, pr #190)
- relativedelta objects previously did not use microseconds to determine of two
relativedelta objects were equal. This oversight has been corrected.
Contributed by @elprans (gh pr #113)
- rrule now has an xafter() method for retrieving multiple recurrences after a
specified date. (gh pr #38)
- str(rrule) now returns an RFC2445-compliant rrule string, contributed by
@schinckel and @armicron (lp:1406305, gh issue #47, prs #50, #62 and #160)
- rrule performance under certain conditions has been significantly improved
thanks to a patch contributed by @dekoza, based on an article by Brian Beck
(@exogen) (gh pr #136)
- The use of both the 'until' and 'count' parameters is now deprecated as
inconsistent with RFC2445 (gh pr #62, #185)
- Parsing an empty string will now raise a ValueError, rather than returning the
datetime passed to the 'default' parameter. (gh issue #78, pr #187)
- tzwinlocal objects now have a meaningful repr() and str() implementation
(gh issue #148, prs #184 and #186)
- Added equality logic for tzwin and tzwinlocal objects. (gh issue #151,
pr #180, #184)
- Added some flexibility in subclassing timelex, and switched the default
behavior over to using string methods rather than comparing against a fixed
list. (gh pr #122, #139)
- An issue causing tzstr() to crash on Python 2.x was fixed. (lp: 1331576,
gh issue #51, pr #55)
- An issue with string encoding causing exceptions under certain circumstances
when tzname() is called was fixed. (gh issue #60, #74, pr #75)
- Parser issue where calling parse() on dates with no day specified when the
day of the month in the default datetime (which is "today" if unspecified) is
greater than the number of days in the parsed month was fixed (this issue
tended to crop up between the 29th and 31st of the month, for obvious reasons)
(canonical gh issue #25, pr #30, #191)
- Fixed parser issue causing fuzzy_with_tokens to raise an unexpected exception
in certain circumstances. Contributed by @MichaelAquilina (gh pr #91)
- Fixed parser issue where years > 100 AD were incorrectly parsed. Contributed
by @Bachmann1234 (gh pr #130)
- Fixed parser issue where commas were not a valid separator between seconds
and microseconds, preventing parsing of ISO 8601 dates. Contributed by
@ryanss (gh issue #28, pr #106)
- Fixed issue with tzwin encoding in locales with non-Latin alphabets
(gh issue #92, pr #98)
- Fixed an issue where tzwin was not being properly imported on Windows.
Contributed by @labrys. (gh pr #134)
- Fixed a problem causing issues importing zoneinfo in certain circumstances.
Issue and solution contributed by @alexxv (gh issue #97, pr #99)
- Fixed an issue where dateutil timezones were not compatible with basic time
objects. One of many, many timezone related issues contributed and tested by
@labrys. (gh issue #132, pr #181)
- Fixed issue where tzwinlocal had an invalid utcoffset. (gh issue #135,
pr #141, #142)
- Fixed issue with tzwin and tzwinlocal where DST transitions were incorrectly
parsed from the registry. (gh issue #143, pr #178)
- updatezinfo.py no longer suppresses certain OSErrors. Contributed by @bjamesv
(gh pr #164)
- An issue that arose when timezone locale changes during runtime has been
fixed by @carlosxl and @mjschultz (gh issue #100, prs #107, #109)
- Python 3.5 was added to the supported platforms in the metadata (@tacaswell
gh pr #159) and the test suites (@moreati gh pr #117).
- An issue with tox failing without unittest2 installed in Python 2.6 was fixed
by @moreati (gh pr #115)
- Several deprecated functions were replaced in the tests by @moreati
(gh pr #116)
- Improved the logic in Travis and Appveyor to alleviate issues where builds
were failing due to connection issues when downloading the IANA timezone
files. In addition to adding our own mirror for the files (gh pr #183), the
download is now retried a number of times (with a delay) (gh pr #177)
- Many failing doctests were fixed by @moreati. (gh pr #120)
- Many fixes to the documentation (gh pr #103, gh pr #87 from @radarhere,
gh pr #154 from @gpoesia, gh pr #156 from @awsum, gh pr #168 from @ja8zyjits)
- Added a code coverage tool to the CI to help improve the library. (gh pr #182)
- We now have a mailing list - dateutil@python.org, graciously hosted by
Python.org.
Version 2.4.2
=============
- Updated zoneinfo to 2015b.
- Fixed issue with parsing of tzstr on Python 2.7.x; tzstr will now be decoded
if not a unicode type. gh #51 (lp:1331576), gh pr #55.
- Fix a parser issue where AM and PM tokens were showing up in fuzzy date
stamps, triggering inappropriate errors. gh #56 (lp: 1428895), gh pr #63.
- Missing function "setcachesize" removed from zoneinfo __all__ list by @ryanss,
fixing an issue with wildcard imports of dateutil.zoneinfo. (gh pr #66).
- (PyPI only) Fix an issue with source distributions not including the test
suite.
Version 2.4.1
=============
- Added explicit check for valid hours if AM/PM is specified in parser.
(gh pr #22, issue #21)
- Fix bug in rrule introduced in 2.4.0 where byweekday parameter was not
handled properly. (gh pr #35, issue #34)
- Fix error where parser allowed some invalid dates, overwriting existing hours
with the last 2-digit number in the string. (gh pr #32, issue #31)
- Fix and add test for Python 2.x compatibility with boolean checking of
relativedelta objects. Implemented by @nimasmi (gh pr #43) and Cédric Krier
(lp: 1035038)
- Replaced parse() calls with explicit datetime objects in unit tests unrelated
to parser. (gh pr #36)
- Changed private _byxxx from sets to sorted tuples and fixed one currently
unreachable bug in _construct_byset. (gh pr #54)
- Additional documentation for parser (gh pr #29, #33, #41) and rrule.
- Formatting fixes to documentation of rrule and README.rst.
- Updated zoneinfo to 2015a.
Version 2.4.0
=============
- Fix an issue with relativedelta and freezegun (lp:1374022)
- Fix tzinfo in windows for timezones without dst (lp:1010050, gh #2)
- Ignore missing timezones in windows like in POSIX
- Fix minimal version requirement for six (gh #6)
- Many rrule changes and fixes by @pganssle (gh pull requests #13 #14 #17),
including defusing some infinite loops (gh #4)
Version 2.3
===========
- Cleanup directory structure, moved test.py to dateutil/tests/test.py
- Changed many aspects of dealing with the zone info file. Instead of a cache,
all the zones are loaded to memory, but symbolic links are loaded only once,
so not much memory is used.
- The package is now zip-safe, and universal-wheelable, thanks to changes in
the handling of the zoneinfo file.
- Fixed tzwin silently not imported on windows python2
- New maintainer, together with new hosting: GitHub, Travis, Read-The-Docs
Version 2.2
===========
- Updated zoneinfo to 2013h
- fuzzy_with_tokens parse addon from Christopher Corley
- Bug with LANG=C fixed by Mike Gilbert
Version 2.1
===========
- New maintainer
- Dateutil now works on Python 2.6, 2.7 and 3.2 from same codebase (with six)
- #704047: Ismael Carnales' patch for a new time format
- Small bug fixes, thanks for reporters!
Version 2.0
===========
- Ported to Python 3, by Brian Jones. If you need dateutil for Python 2.X,
please continue using the 1.X series.
- There's no such thing as a "PSF License". This source code is now
made available under the Simplified BSD license. See LICENSE for
details.
Version 1.5
===========
- As reported by Mathieu Bridon, rrules were matching the bysecond rules
incorrectly against byminute in some circumstances when the SECONDLY
frequency was in use, due to a copy & paste bug. The problem has been
unittested and corrected.
- Adam Ryan reported a problem in the relativedelta implementation which
affected the yearday parameter in the month of January specifically.
This has been unittested and fixed.
- Updated timezone information.
Version 1.4.1
=============
- Updated timezone information.
Version 1.4
===========
- Fixed another parser precision problem on conversion of decimal seconds
to microseconds, as reported by Erik Brown. Now these issues are gone
for real since it's not using floating point arithmetic anymore.
- Fixed case where tzrange.utcoffset and tzrange.dst() might fail due
to a date being used where a datetime was expected (reported and fixed
by Lennart Regebro).
- Prevent tzstr from introducing daylight timings in strings that didn't
specify them (reported by Lennart Regebro).
- Calls like gettz("GMT+3") and gettz("UTC-2") will now return the
expected values, instead of the TZ variable behavior.
- Fixed DST signal handling in zoneinfo files. Reported by
Nicholas F. Fabry and John-Mark Gurney.
Version 1.3
===========
- Fixed precision problem on conversion of decimal seconds to
microseconds, as reported by Skip Montanaro.
- Fixed bug in constructor of parser, and converted parser classes to
new-style classes. Original report and patch by Michael Elsdörfer.
- Initialize tzid and comps in tz.py, to prevent the code from ever
raising a NameError (even with broken files). Johan Dahlin suggested
the fix after a pyflakes run.
- Version is now published in dateutil.__version__, as requested
by Darren Dale.
- All code is compatible with new-style division.
Version 1.2
===========
- Now tzfile will round timezones to full-minutes if necessary,
since Python's datetime doesn't support sub-minute offsets.
Thanks to Ilpo Nyyssönen for reporting the issue.
- Removed bare string exceptions, as reported and fixed by
Wilfredo Sánchez Vega.
- Fix bug in leap count parsing (reported and fixed by Eugene Oden).
Version 1.1
===========
- Fixed rrule byyearday handling. Abramo Bagnara pointed out that
RFC2445 allows negative numbers.
- Fixed --prefix handling in setup.py (by Sidnei da Silva).
- Now tz.gettz() returns a tzlocal instance when not given any
arguments and no other timezone information is found.
- Updating timezone information to version 2005q.
Version 1.0
===========
- Fixed parsing of XXhXXm formatted time after day/month/year
has been parsed.
- Added patch by Jeffrey Harris optimizing rrule.__contains__.
Version 0.9
===========
- Fixed pickling of timezone types, as reported by
Andreas Köhler.
- Implemented internal timezone information with binary
timezone files. datautil.tz.gettz() function will now
try to use the system timezone files, and fallback to
the internal versions. It's also possible to ask for
the internal versions directly by using
dateutil.zoneinfo.gettz().
- New tzwin timezone type, allowing access to Windows
internal timezones (contributed by Jeffrey Harris).
- Fixed parsing of unicode date strings.
- Accept parserinfo instances as the parser constructor
parameter, besides parserinfo (sub)classes.
- Changed weekday to spell the not-set n value as None
instead of 0.
- Fixed other reported bugs.
Version 0.5
===========
- Removed ``FREQ_`` prefix from rrule frequency constants
WARNING: this breaks compatibility with previous versions.
- Fixed rrule.between() for cases where "after" is achieved
before even starting, as reported by Andreas Köhler.
- Fixed two digit zero-year parsing (such as 31-Dec-00), as
reported by Jim Abramson, and included test case for this.
- Sort exdate and rdate before iterating over them, so that
it's not necessary to sort them before adding to the rruleset,
as reported by Nicholas Piper.

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@ -0,0 +1,158 @@
dateutil - powerful extensions to datetime
==========================================
|pypi| |support| |licence|
|gitter| |readthedocs|
|travis| |appveyor| |coverage|
.. |pypi| image:: https://img.shields.io/pypi/v/python-dateutil.svg?style=flat-square
:target: https://pypi.org/project/python-dateutil/
:alt: pypi version
.. |support| image:: https://img.shields.io/pypi/pyversions/python-dateutil.svg?style=flat-square
:target: https://pypi.org/project/python-dateutil/
:alt: supported Python version
.. |travis| image:: https://img.shields.io/travis/dateutil/dateutil/master.svg?style=flat-square&label=Travis%20Build
:target: https://travis-ci.org/dateutil/dateutil
:alt: travis build status
.. |appveyor| image:: https://img.shields.io/appveyor/ci/dateutil/dateutil/master.svg?style=flat-square&logo=appveyor
:target: https://ci.appveyor.com/project/dateutil/dateutil
:alt: appveyor build status
.. |coverage| image:: https://codecov.io/github/dateutil/dateutil/coverage.svg?branch=master
:target: https://codecov.io/github/dateutil/dateutil?branch=master
:alt: Code coverage
.. |gitter| image:: https://badges.gitter.im/dateutil/dateutil.svg
:alt: Join the chat at https://gitter.im/dateutil/dateutil
:target: https://gitter.im/dateutil/dateutil
.. |licence| image:: https://img.shields.io/pypi/l/python-dateutil.svg?style=flat-square
:target: https://pypi.org/project/python-dateutil/
:alt: licence
.. |readthedocs| image:: https://img.shields.io/readthedocs/dateutil/latest.svg?style=flat-square&label=Read%20the%20Docs
:alt: Read the documentation at https://dateutil.readthedocs.io/en/latest/
:target: https://dateutil.readthedocs.io/en/latest/
The `dateutil` module provides powerful extensions to
the standard `datetime` module, available in Python.
Download
========
dateutil is available on PyPI
https://pypi.org/project/python-dateutil/
The documentation is hosted at:
https://dateutil.readthedocs.io/en/stable/
Code
====
The code and issue tracker are hosted on Github:
https://github.com/dateutil/dateutil/
Features
========
* Computing of relative deltas (next month, next year,
next monday, last week of month, etc);
* Computing of relative deltas between two given
date and/or datetime objects;
* Computing of dates based on very flexible recurrence rules,
using a superset of the `iCalendar <https://www.ietf.org/rfc/rfc2445.txt>`_
specification. Parsing of RFC strings is supported as well.
* Generic parsing of dates in almost any string format;
* Timezone (tzinfo) implementations for tzfile(5) format
files (/etc/localtime, /usr/share/zoneinfo, etc), TZ
environment string (in all known formats), iCalendar
format files, given ranges (with help from relative deltas),
local machine timezone, fixed offset timezone, UTC timezone,
and Windows registry-based time zones.
* Internal up-to-date world timezone information based on
Olson's database.
* Computing of Easter Sunday dates for any given year,
using Western, Orthodox or Julian algorithms;
* A comprehensive test suite.
Quick example
=============
Here's a snapshot, just to give an idea about the power of the
package. For more examples, look at the documentation.
Suppose you want to know how much time is left, in
years/months/days/etc, before the next easter happening on a
year with a Friday 13th in August, and you want to get today's
date out of the "date" unix system command. Here is the code:
.. doctest:: readmeexample
>>> from dateutil.relativedelta import *
>>> from dateutil.easter import *
>>> from dateutil.rrule import *
>>> from dateutil.parser import *
>>> from datetime import *
>>> now = parse("Sat Oct 11 17:13:46 UTC 2003")
>>> today = now.date()
>>> year = rrule(YEARLY,dtstart=now,bymonth=8,bymonthday=13,byweekday=FR)[0].year
>>> rdelta = relativedelta(easter(year), today)
>>> print("Today is: %s" % today)
Today is: 2003-10-11
>>> print("Year with next Aug 13th on a Friday is: %s" % year)
Year with next Aug 13th on a Friday is: 2004
>>> print("How far is the Easter of that year: %s" % rdelta)
How far is the Easter of that year: relativedelta(months=+6)
>>> print("And the Easter of that year is: %s" % (today+rdelta))
And the Easter of that year is: 2004-04-11
Being exactly 6 months ahead was **really** a coincidence :)
Contributing
============
We welcome many types of contributions - bug reports, pull requests (code, infrastructure or documentation fixes). For more information about how to contribute to the project, see the ``CONTRIBUTING.md`` file in the repository.
Author
======
The dateutil module was written by Gustavo Niemeyer <gustavo@niemeyer.net>
in 2003.
It is maintained by:
* Gustavo Niemeyer <gustavo@niemeyer.net> 2003-2011
* Tomi Pieviläinen <tomi.pievilainen@iki.fi> 2012-2014
* Yaron de Leeuw <me@jarondl.net> 2014-2016
* Paul Ganssle <paul@ganssle.io> 2015-
Starting with version 2.4.1, all source and binary distributions will be signed
by a PGP key that has, at the very least, been signed by the key which made the
previous release. A table of release signing keys can be found below:
=========== ============================
Releases Signing key fingerprint
=========== ============================
2.4.1- `6B49 ACBA DCF6 BD1C A206 67AB CD54 FCE3 D964 BEFB`_ (|pgp_mirror|_)
=========== ============================
Contact
=======
Our mailing list is available at `dateutil@python.org <https://mail.python.org/mailman/listinfo/dateutil>`_. As it is hosted by the PSF, it is subject to the `PSF code of
conduct <https://www.python.org/psf/codeofconduct/>`_.
License
=======
All contributions after December 1, 2017 released under dual license - either `Apache 2.0 License <https://www.apache.org/licenses/LICENSE-2.0>`_ or the `BSD 3-Clause License <https://opensource.org/licenses/BSD-3-Clause>`_. Contributions before December 1, 2017 - except those those explicitly relicensed - are released only under the BSD 3-Clause License.
.. _6B49 ACBA DCF6 BD1C A206 67AB CD54 FCE3 D964 BEFB:
https://pgp.mit.edu/pks/lookup?op=vindex&search=0xCD54FCE3D964BEFB
.. |pgp_mirror| replace:: mirror
.. _pgp_mirror: https://sks-keyservers.net/pks/lookup?op=vindex&search=0xCD54FCE3D964BEFB

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# -*- coding: utf-8 -*-
try:
from ._version import version as __version__
except ImportError:
__version__ = 'unknown'
__all__ = ['easter', 'parser', 'relativedelta', 'rrule', 'tz',
'utils', 'zoneinfo']

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"""
Common code used in multiple modules.
"""
class weekday(object):
__slots__ = ["weekday", "n"]
def __init__(self, weekday, n=None):
self.weekday = weekday
self.n = n
def __call__(self, n):
if n == self.n:
return self
else:
return self.__class__(self.weekday, n)
def __eq__(self, other):
try:
if self.weekday != other.weekday or self.n != other.n:
return False
except AttributeError:
return False
return True
def __hash__(self):
return hash((
self.weekday,
self.n,
))
def __ne__(self, other):
return not (self == other)
def __repr__(self):
s = ("MO", "TU", "WE", "TH", "FR", "SA", "SU")[self.weekday]
if not self.n:
return s
else:
return "%s(%+d)" % (s, self.n)
# vim:ts=4:sw=4:et

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# -*- coding: utf-8 -*-
"""
This module offers a generic easter computing method for any given year, using
Western, Orthodox or Julian algorithms.
"""
import datetime
__all__ = ["easter", "EASTER_JULIAN", "EASTER_ORTHODOX", "EASTER_WESTERN"]
EASTER_JULIAN = 1
EASTER_ORTHODOX = 2
EASTER_WESTERN = 3
def easter(year, method=EASTER_WESTERN):
"""
This method was ported from the work done by GM Arts,
on top of the algorithm by Claus Tondering, which was
based in part on the algorithm of Ouding (1940), as
quoted in "Explanatory Supplement to the Astronomical
Almanac", P. Kenneth Seidelmann, editor.
This algorithm implements three different easter
calculation methods:
1 - Original calculation in Julian calendar, valid in
dates after 326 AD
2 - Original method, with date converted to Gregorian
calendar, valid in years 1583 to 4099
3 - Revised method, in Gregorian calendar, valid in
years 1583 to 4099 as well
These methods are represented by the constants:
* ``EASTER_JULIAN = 1``
* ``EASTER_ORTHODOX = 2``
* ``EASTER_WESTERN = 3``
The default method is method 3.
More about the algorithm may be found at:
`GM Arts: Easter Algorithms <http://www.gmarts.org/index.php?go=415>`_
and
`The Calendar FAQ: Easter <https://www.tondering.dk/claus/cal/easter.php>`_
"""
if not (1 <= method <= 3):
raise ValueError("invalid method")
# g - Golden year - 1
# c - Century
# h - (23 - Epact) mod 30
# i - Number of days from March 21 to Paschal Full Moon
# j - Weekday for PFM (0=Sunday, etc)
# p - Number of days from March 21 to Sunday on or before PFM
# (-6 to 28 methods 1 & 3, to 56 for method 2)
# e - Extra days to add for method 2 (converting Julian
# date to Gregorian date)
y = year
g = y % 19
e = 0
if method < 3:
# Old method
i = (19*g + 15) % 30
j = (y + y//4 + i) % 7
if method == 2:
# Extra dates to convert Julian to Gregorian date
e = 10
if y > 1600:
e = e + y//100 - 16 - (y//100 - 16)//4
else:
# New method
c = y//100
h = (c - c//4 - (8*c + 13)//25 + 19*g + 15) % 30
i = h - (h//28)*(1 - (h//28)*(29//(h + 1))*((21 - g)//11))
j = (y + y//4 + i + 2 - c + c//4) % 7
# p can be from -6 to 56 corresponding to dates 22 March to 23 May
# (later dates apply to method 2, although 23 May never actually occurs)
p = i - j + e
d = 1 + (p + 27 + (p + 6)//40) % 31
m = 3 + (p + 26)//30
return datetime.date(int(y), int(m), int(d))

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# -*- coding: utf-8 -*-
from ._parser import parse, parser, parserinfo
from ._parser import DEFAULTPARSER, DEFAULTTZPARSER
from ._parser import UnknownTimezoneWarning
from ._parser import __doc__
from .isoparser import isoparser, isoparse
__all__ = ['parse', 'parser', 'parserinfo',
'isoparse', 'isoparser',
'UnknownTimezoneWarning']
###
# Deprecate portions of the private interface so that downstream code that
# is improperly relying on it is given *some* notice.
def __deprecated_private_func(f):
from functools import wraps
import warnings
msg = ('{name} is a private function and may break without warning, '
'it will be moved and or renamed in future versions.')
msg = msg.format(name=f.__name__)
@wraps(f)
def deprecated_func(*args, **kwargs):
warnings.warn(msg, DeprecationWarning)
return f(*args, **kwargs)
return deprecated_func
def __deprecate_private_class(c):
import warnings
msg = ('{name} is a private class and may break without warning, '
'it will be moved and or renamed in future versions.')
msg = msg.format(name=c.__name__)
class private_class(c):
__doc__ = c.__doc__
def __init__(self, *args, **kwargs):
warnings.warn(msg, DeprecationWarning)
super(private_class, self).__init__(*args, **kwargs)
private_class.__name__ = c.__name__
return private_class
from ._parser import _timelex, _resultbase
from ._parser import _tzparser, _parsetz
_timelex = __deprecate_private_class(_timelex)
_tzparser = __deprecate_private_class(_tzparser)
_resultbase = __deprecate_private_class(_resultbase)
_parsetz = __deprecated_private_func(_parsetz)

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# -*- coding: utf-8 -*-
"""
This module offers a parser for ISO-8601 strings
It is intended to support all valid date, time and datetime formats per the
ISO-8601 specification.
..versionadded:: 2.7.0
"""
from datetime import datetime, timedelta, time, date
import calendar
from .. import tz
from functools import wraps
import re
from .. import six
__all__ = ["isoparse", "isoparser"]
def _takes_ascii(f):
@wraps(f)
def func(self, str_in, *args, **kwargs):
# If it's a stream, read the whole thing
str_in = getattr(str_in, 'read', lambda: str_in)()
# If it's unicode, turn it into bytes, since ISO-8601 only covers ASCII
if isinstance(str_in, six.text_type):
# ASCII is the same in UTF-8
try:
str_in = str_in.encode('ascii')
except UnicodeEncodeError as e:
msg = 'ISO-8601 strings should contain only ASCII characters'
six.raise_from(ValueError(msg), e)
return f(self, str_in, *args, **kwargs)
return func
class isoparser(object):
def __init__(self, sep=None):
"""
:param sep:
A single character that separates date and time portions. If
``None``, the parser will accept any single character.
For strict ISO-8601 adherence, pass ``'T'``.
"""
if sep is not None:
if (len(sep) != 1 or ord(sep) >= 128 or sep in '0123456789'):
raise ValueError('Separator must be a single, non-numeric ' +
'ASCII character')
sep = sep.encode('ascii')
self._sep = sep
@_takes_ascii
def isoparse(self, dt_str):
"""
Parse an ISO-8601 datetime string into a :class:`datetime.datetime`.
An ISO-8601 datetime string consists of a date portion, followed
optionally by a time portion - the date and time portions are separated
by a single character separator, which is ``T`` in the official
standard. Incomplete date formats (such as ``YYYY-MM``) may *not* be
combined with a time portion.
Supported date formats are:
Common:
- ``YYYY``
- ``YYYY-MM`` or ``YYYYMM``
- ``YYYY-MM-DD`` or ``YYYYMMDD``
Uncommon:
- ``YYYY-Www`` or ``YYYYWww`` - ISO week (day defaults to 0)
- ``YYYY-Www-D`` or ``YYYYWwwD`` - ISO week and day
The ISO week and day numbering follows the same logic as
:func:`datetime.date.isocalendar`.
Supported time formats are:
- ``hh``
- ``hh:mm`` or ``hhmm``
- ``hh:mm:ss`` or ``hhmmss``
- ``hh:mm:ss.sss`` or ``hh:mm:ss.ssssss`` (3-6 sub-second digits)
Midnight is a special case for `hh`, as the standard supports both
00:00 and 24:00 as a representation.
.. caution::
Support for fractional components other than seconds is part of the
ISO-8601 standard, but is not currently implemented in this parser.
Supported time zone offset formats are:
- `Z` (UTC)
- `±HH:MM`
- `±HHMM`
- `±HH`
Offsets will be represented as :class:`dateutil.tz.tzoffset` objects,
with the exception of UTC, which will be represented as
:class:`dateutil.tz.tzutc`. Time zone offsets equivalent to UTC (such
as `+00:00`) will also be represented as :class:`dateutil.tz.tzutc`.
:param dt_str:
A string or stream containing only an ISO-8601 datetime string
:return:
Returns a :class:`datetime.datetime` representing the string.
Unspecified components default to their lowest value.
.. warning::
As of version 2.7.0, the strictness of the parser should not be
considered a stable part of the contract. Any valid ISO-8601 string
that parses correctly with the default settings will continue to
parse correctly in future versions, but invalid strings that
currently fail (e.g. ``2017-01-01T00:00+00:00:00``) are not
guaranteed to continue failing in future versions if they encode
a valid date.
.. versionadded:: 2.7.0
"""
components, pos = self._parse_isodate(dt_str)
if len(dt_str) > pos:
if self._sep is None or dt_str[pos:pos + 1] == self._sep:
components += self._parse_isotime(dt_str[pos + 1:])
else:
raise ValueError('String contains unknown ISO components')
return datetime(*components)
@_takes_ascii
def parse_isodate(self, datestr):
"""
Parse the date portion of an ISO string.
:param datestr:
The string portion of an ISO string, without a separator
:return:
Returns a :class:`datetime.date` object
"""
components, pos = self._parse_isodate(datestr)
if pos < len(datestr):
raise ValueError('String contains unknown ISO ' +
'components: {}'.format(datestr))
return date(*components)
@_takes_ascii
def parse_isotime(self, timestr):
"""
Parse the time portion of an ISO string.
:param timestr:
The time portion of an ISO string, without a separator
:return:
Returns a :class:`datetime.time` object
"""
return time(*self._parse_isotime(timestr))
@_takes_ascii
def parse_tzstr(self, tzstr, zero_as_utc=True):
"""
Parse a valid ISO time zone string.
See :func:`isoparser.isoparse` for details on supported formats.
:param tzstr:
A string representing an ISO time zone offset
:param zero_as_utc:
Whether to return :class:`dateutil.tz.tzutc` for zero-offset zones
:return:
Returns :class:`dateutil.tz.tzoffset` for offsets and
:class:`dateutil.tz.tzutc` for ``Z`` and (if ``zero_as_utc`` is
specified) offsets equivalent to UTC.
"""
return self._parse_tzstr(tzstr, zero_as_utc=zero_as_utc)
# Constants
_MICROSECOND_END_REGEX = re.compile(b'[-+Z]+')
_DATE_SEP = b'-'
_TIME_SEP = b':'
_MICRO_SEP = b'.'
def _parse_isodate(self, dt_str):
try:
return self._parse_isodate_common(dt_str)
except ValueError:
return self._parse_isodate_uncommon(dt_str)
def _parse_isodate_common(self, dt_str):
len_str = len(dt_str)
components = [1, 1, 1]
if len_str < 4:
raise ValueError('ISO string too short')
# Year
components[0] = int(dt_str[0:4])
pos = 4
if pos >= len_str:
return components, pos
has_sep = dt_str[pos:pos + 1] == self._DATE_SEP
if has_sep:
pos += 1
# Month
if len_str - pos < 2:
raise ValueError('Invalid common month')
components[1] = int(dt_str[pos:pos + 2])
pos += 2
if pos >= len_str:
if has_sep:
return components, pos
else:
raise ValueError('Invalid ISO format')
if has_sep:
if dt_str[pos:pos + 1] != self._DATE_SEP:
raise ValueError('Invalid separator in ISO string')
pos += 1
# Day
if len_str - pos < 2:
raise ValueError('Invalid common day')
components[2] = int(dt_str[pos:pos + 2])
return components, pos + 2
def _parse_isodate_uncommon(self, dt_str):
if len(dt_str) < 4:
raise ValueError('ISO string too short')
# All ISO formats start with the year
year = int(dt_str[0:4])
has_sep = dt_str[4:5] == self._DATE_SEP
pos = 4 + has_sep # Skip '-' if it's there
if dt_str[pos:pos + 1] == b'W':
# YYYY-?Www-?D?
pos += 1
weekno = int(dt_str[pos:pos + 2])
pos += 2
dayno = 1
if len(dt_str) > pos:
if (dt_str[pos:pos + 1] == self._DATE_SEP) != has_sep:
raise ValueError('Inconsistent use of dash separator')
pos += has_sep
dayno = int(dt_str[pos:pos + 1])
pos += 1
base_date = self._calculate_weekdate(year, weekno, dayno)
else:
# YYYYDDD or YYYY-DDD
if len(dt_str) - pos < 3:
raise ValueError('Invalid ordinal day')
ordinal_day = int(dt_str[pos:pos + 3])
pos += 3
if ordinal_day < 1 or ordinal_day > (365 + calendar.isleap(year)):
raise ValueError('Invalid ordinal day' +
' {} for year {}'.format(ordinal_day, year))
base_date = date(year, 1, 1) + timedelta(days=ordinal_day - 1)
components = [base_date.year, base_date.month, base_date.day]
return components, pos
def _calculate_weekdate(self, year, week, day):
"""
Calculate the day of corresponding to the ISO year-week-day calendar.
This function is effectively the inverse of
:func:`datetime.date.isocalendar`.
:param year:
The year in the ISO calendar
:param week:
The week in the ISO calendar - range is [1, 53]
:param day:
The day in the ISO calendar - range is [1 (MON), 7 (SUN)]
:return:
Returns a :class:`datetime.date`
"""
if not 0 < week < 54:
raise ValueError('Invalid week: {}'.format(week))
if not 0 < day < 8: # Range is 1-7
raise ValueError('Invalid weekday: {}'.format(day))
# Get week 1 for the specific year:
jan_4 = date(year, 1, 4) # Week 1 always has January 4th in it
week_1 = jan_4 - timedelta(days=jan_4.isocalendar()[2] - 1)
# Now add the specific number of weeks and days to get what we want
week_offset = (week - 1) * 7 + (day - 1)
return week_1 + timedelta(days=week_offset)
def _parse_isotime(self, timestr):
len_str = len(timestr)
components = [0, 0, 0, 0, None]
pos = 0
comp = -1
if len(timestr) < 2:
raise ValueError('ISO time too short')
has_sep = len_str >= 3 and timestr[2:3] == self._TIME_SEP
while pos < len_str and comp < 5:
comp += 1
if timestr[pos:pos + 1] in b'-+Z':
# Detect time zone boundary
components[-1] = self._parse_tzstr(timestr[pos:])
pos = len_str
break
if comp < 3:
# Hour, minute, second
components[comp] = int(timestr[pos:pos + 2])
pos += 2
if (has_sep and pos < len_str and
timestr[pos:pos + 1] == self._TIME_SEP):
pos += 1
if comp == 3:
# Microsecond
if timestr[pos:pos + 1] != self._MICRO_SEP:
continue
pos += 1
us_str = self._MICROSECOND_END_REGEX.split(timestr[pos:pos + 6],
1)[0]
components[comp] = int(us_str) * 10**(6 - len(us_str))
pos += len(us_str)
if pos < len_str:
raise ValueError('Unused components in ISO string')
if components[0] == 24:
# Standard supports 00:00 and 24:00 as representations of midnight
if any(component != 0 for component in components[1:4]):
raise ValueError('Hour may only be 24 at 24:00:00.000')
components[0] = 0
return components
def _parse_tzstr(self, tzstr, zero_as_utc=True):
if tzstr == b'Z':
return tz.tzutc()
if len(tzstr) not in {3, 5, 6}:
raise ValueError('Time zone offset must be 1, 3, 5 or 6 characters')
if tzstr[0:1] == b'-':
mult = -1
elif tzstr[0:1] == b'+':
mult = 1
else:
raise ValueError('Time zone offset requires sign')
hours = int(tzstr[1:3])
if len(tzstr) == 3:
minutes = 0
else:
minutes = int(tzstr[(4 if tzstr[3:4] == self._TIME_SEP else 3):])
if zero_as_utc and hours == 0 and minutes == 0:
return tz.tzutc()
else:
if minutes > 59:
raise ValueError('Invalid minutes in time zone offset')
if hours > 23:
raise ValueError('Invalid hours in time zone offset')
return tz.tzoffset(None, mult * (hours * 60 + minutes) * 60)
DEFAULT_ISOPARSER = isoparser()
isoparse = DEFAULT_ISOPARSER.isoparse

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@ -0,0 +1,590 @@
# -*- coding: utf-8 -*-
import datetime
import calendar
import operator
from math import copysign
from six import integer_types
from warnings import warn
from ._common import weekday
MO, TU, WE, TH, FR, SA, SU = weekdays = tuple(weekday(x) for x in range(7))
__all__ = ["relativedelta", "MO", "TU", "WE", "TH", "FR", "SA", "SU"]
class relativedelta(object):
"""
The relativedelta type is based on the specification of the excellent
work done by M.-A. Lemburg in his
`mx.DateTime <https://www.egenix.com/products/python/mxBase/mxDateTime/>`_ extension.
However, notice that this type does *NOT* implement the same algorithm as
his work. Do *NOT* expect it to behave like mx.DateTime's counterpart.
There are two different ways to build a relativedelta instance. The
first one is passing it two date/datetime classes::
relativedelta(datetime1, datetime2)
The second one is passing it any number of the following keyword arguments::
relativedelta(arg1=x,arg2=y,arg3=z...)
year, month, day, hour, minute, second, microsecond:
Absolute information (argument is singular); adding or subtracting a
relativedelta with absolute information does not perform an arithmetic
operation, but rather REPLACES the corresponding value in the
original datetime with the value(s) in relativedelta.
years, months, weeks, days, hours, minutes, seconds, microseconds:
Relative information, may be negative (argument is plural); adding
or subtracting a relativedelta with relative information performs
the corresponding aritmetic operation on the original datetime value
with the information in the relativedelta.
weekday:
One of the weekday instances (MO, TU, etc). These
instances may receive a parameter N, specifying the Nth
weekday, which could be positive or negative (like MO(+1)
or MO(-2). Not specifying it is the same as specifying
+1. You can also use an integer, where 0=MO. Notice that
if the calculated date is already Monday, for example,
using MO(1) or MO(-1) won't change the day.
leapdays:
Will add given days to the date found, if year is a leap
year, and the date found is post 28 of february.
yearday, nlyearday:
Set the yearday or the non-leap year day (jump leap days).
These are converted to day/month/leapdays information.
There are relative and absolute forms of the keyword
arguments. The plural is relative, and the singular is
absolute. For each argument in the order below, the absolute form
is applied first (by setting each attribute to that value) and
then the relative form (by adding the value to the attribute).
The order of attributes considered when this relativedelta is
added to a datetime is:
1. Year
2. Month
3. Day
4. Hours
5. Minutes
6. Seconds
7. Microseconds
Finally, weekday is applied, using the rule described above.
For example
>>> dt = datetime(2018, 4, 9, 13, 37, 0)
>>> delta = relativedelta(hours=25, day=1, weekday=MO(1))
datetime(2018, 4, 2, 14, 37, 0)
First, the day is set to 1 (the first of the month), then 25 hours
are added, to get to the 2nd day and 14th hour, finally the
weekday is applied, but since the 2nd is already a Monday there is
no effect.
"""
def __init__(self, dt1=None, dt2=None,
years=0, months=0, days=0, leapdays=0, weeks=0,
hours=0, minutes=0, seconds=0, microseconds=0,
year=None, month=None, day=None, weekday=None,
yearday=None, nlyearday=None,
hour=None, minute=None, second=None, microsecond=None):
if dt1 and dt2:
# datetime is a subclass of date. So both must be date
if not (isinstance(dt1, datetime.date) and
isinstance(dt2, datetime.date)):
raise TypeError("relativedelta only diffs datetime/date")
# We allow two dates, or two datetimes, so we coerce them to be
# of the same type
if (isinstance(dt1, datetime.datetime) !=
isinstance(dt2, datetime.datetime)):
if not isinstance(dt1, datetime.datetime):
dt1 = datetime.datetime.fromordinal(dt1.toordinal())
elif not isinstance(dt2, datetime.datetime):
dt2 = datetime.datetime.fromordinal(dt2.toordinal())
self.years = 0
self.months = 0
self.days = 0
self.leapdays = 0
self.hours = 0
self.minutes = 0
self.seconds = 0
self.microseconds = 0
self.year = None
self.month = None
self.day = None
self.weekday = None
self.hour = None
self.minute = None
self.second = None
self.microsecond = None
self._has_time = 0
# Get year / month delta between the two
months = (dt1.year - dt2.year) * 12 + (dt1.month - dt2.month)
self._set_months(months)
# Remove the year/month delta so the timedelta is just well-defined
# time units (seconds, days and microseconds)
dtm = self.__radd__(dt2)
# If we've overshot our target, make an adjustment
if dt1 < dt2:
compare = operator.gt
increment = 1
else:
compare = operator.lt
increment = -1
while compare(dt1, dtm):
months += increment
self._set_months(months)
dtm = self.__radd__(dt2)
# Get the timedelta between the "months-adjusted" date and dt1
delta = dt1 - dtm
self.seconds = delta.seconds + delta.days * 86400
self.microseconds = delta.microseconds
else:
# Check for non-integer values in integer-only quantities
if any(x is not None and x != int(x) for x in (years, months)):
raise ValueError("Non-integer years and months are "
"ambiguous and not currently supported.")
# Relative information
self.years = int(years)
self.months = int(months)
self.days = days + weeks * 7
self.leapdays = leapdays
self.hours = hours
self.minutes = minutes
self.seconds = seconds
self.microseconds = microseconds
# Absolute information
self.year = year
self.month = month
self.day = day
self.hour = hour
self.minute = minute
self.second = second
self.microsecond = microsecond
if any(x is not None and int(x) != x
for x in (year, month, day, hour,
minute, second, microsecond)):
# For now we'll deprecate floats - later it'll be an error.
warn("Non-integer value passed as absolute information. " +
"This is not a well-defined condition and will raise " +
"errors in future versions.", DeprecationWarning)
if isinstance(weekday, integer_types):
self.weekday = weekdays[weekday]
else:
self.weekday = weekday
yday = 0
if nlyearday:
yday = nlyearday
elif yearday:
yday = yearday
if yearday > 59:
self.leapdays = -1
if yday:
ydayidx = [31, 59, 90, 120, 151, 181, 212,
243, 273, 304, 334, 366]
for idx, ydays in enumerate(ydayidx):
if yday <= ydays:
self.month = idx+1
if idx == 0:
self.day = yday
else:
self.day = yday-ydayidx[idx-1]
break
else:
raise ValueError("invalid year day (%d)" % yday)
self._fix()
def _fix(self):
if abs(self.microseconds) > 999999:
s = _sign(self.microseconds)
div, mod = divmod(self.microseconds * s, 1000000)
self.microseconds = mod * s
self.seconds += div * s
if abs(self.seconds) > 59:
s = _sign(self.seconds)
div, mod = divmod(self.seconds * s, 60)
self.seconds = mod * s
self.minutes += div * s
if abs(self.minutes) > 59:
s = _sign(self.minutes)
div, mod = divmod(self.minutes * s, 60)
self.minutes = mod * s
self.hours += div * s
if abs(self.hours) > 23:
s = _sign(self.hours)
div, mod = divmod(self.hours * s, 24)
self.hours = mod * s
self.days += div * s
if abs(self.months) > 11:
s = _sign(self.months)
div, mod = divmod(self.months * s, 12)
self.months = mod * s
self.years += div * s
if (self.hours or self.minutes or self.seconds or self.microseconds
or self.hour is not None or self.minute is not None or
self.second is not None or self.microsecond is not None):
self._has_time = 1
else:
self._has_time = 0
@property
def weeks(self):
return int(self.days / 7.0)
@weeks.setter
def weeks(self, value):
self.days = self.days - (self.weeks * 7) + value * 7
def _set_months(self, months):
self.months = months
if abs(self.months) > 11:
s = _sign(self.months)
div, mod = divmod(self.months * s, 12)
self.months = mod * s
self.years = div * s
else:
self.years = 0
def normalized(self):
"""
Return a version of this object represented entirely using integer
values for the relative attributes.
>>> relativedelta(days=1.5, hours=2).normalized()
relativedelta(days=1, hours=14)
:return:
Returns a :class:`dateutil.relativedelta.relativedelta` object.
"""
# Cascade remainders down (rounding each to roughly nearest microsecond)
days = int(self.days)
hours_f = round(self.hours + 24 * (self.days - days), 11)
hours = int(hours_f)
minutes_f = round(self.minutes + 60 * (hours_f - hours), 10)
minutes = int(minutes_f)
seconds_f = round(self.seconds + 60 * (minutes_f - minutes), 8)
seconds = int(seconds_f)
microseconds = round(self.microseconds + 1e6 * (seconds_f - seconds))
# Constructor carries overflow back up with call to _fix()
return self.__class__(years=self.years, months=self.months,
days=days, hours=hours, minutes=minutes,
seconds=seconds, microseconds=microseconds,
leapdays=self.leapdays, year=self.year,
month=self.month, day=self.day,
weekday=self.weekday, hour=self.hour,
minute=self.minute, second=self.second,
microsecond=self.microsecond)
def __add__(self, other):
if isinstance(other, relativedelta):
return self.__class__(years=other.years + self.years,
months=other.months + self.months,
days=other.days + self.days,
hours=other.hours + self.hours,
minutes=other.minutes + self.minutes,
seconds=other.seconds + self.seconds,
microseconds=(other.microseconds +
self.microseconds),
leapdays=other.leapdays or self.leapdays,
year=(other.year if other.year is not None
else self.year),
month=(other.month if other.month is not None
else self.month),
day=(other.day if other.day is not None
else self.day),
weekday=(other.weekday if other.weekday is not None
else self.weekday),
hour=(other.hour if other.hour is not None
else self.hour),
minute=(other.minute if other.minute is not None
else self.minute),
second=(other.second if other.second is not None
else self.second),
microsecond=(other.microsecond if other.microsecond
is not None else
self.microsecond))
if isinstance(other, datetime.timedelta):
return self.__class__(years=self.years,
months=self.months,
days=self.days + other.days,
hours=self.hours,
minutes=self.minutes,
seconds=self.seconds + other.seconds,
microseconds=self.microseconds + other.microseconds,
leapdays=self.leapdays,
year=self.year,
month=self.month,
day=self.day,
weekday=self.weekday,
hour=self.hour,
minute=self.minute,
second=self.second,
microsecond=self.microsecond)
if not isinstance(other, datetime.date):
return NotImplemented
elif self._has_time and not isinstance(other, datetime.datetime):
other = datetime.datetime.fromordinal(other.toordinal())
year = (self.year or other.year)+self.years
month = self.month or other.month
if self.months:
assert 1 <= abs(self.months) <= 12
month += self.months
if month > 12:
year += 1
month -= 12
elif month < 1:
year -= 1
month += 12
day = min(calendar.monthrange(year, month)[1],
self.day or other.day)
repl = {"year": year, "month": month, "day": day}
for attr in ["hour", "minute", "second", "microsecond"]:
value = getattr(self, attr)
if value is not None:
repl[attr] = value
days = self.days
if self.leapdays and month > 2 and calendar.isleap(year):
days += self.leapdays
ret = (other.replace(**repl)
+ datetime.timedelta(days=days,
hours=self.hours,
minutes=self.minutes,
seconds=self.seconds,
microseconds=self.microseconds))
if self.weekday:
weekday, nth = self.weekday.weekday, self.weekday.n or 1
jumpdays = (abs(nth) - 1) * 7
if nth > 0:
jumpdays += (7 - ret.weekday() + weekday) % 7
else:
jumpdays += (ret.weekday() - weekday) % 7
jumpdays *= -1
ret += datetime.timedelta(days=jumpdays)
return ret
def __radd__(self, other):
return self.__add__(other)
def __rsub__(self, other):
return self.__neg__().__radd__(other)
def __sub__(self, other):
if not isinstance(other, relativedelta):
return NotImplemented # In case the other object defines __rsub__
return self.__class__(years=self.years - other.years,
months=self.months - other.months,
days=self.days - other.days,
hours=self.hours - other.hours,
minutes=self.minutes - other.minutes,
seconds=self.seconds - other.seconds,
microseconds=self.microseconds - other.microseconds,
leapdays=self.leapdays or other.leapdays,
year=(self.year if self.year is not None
else other.year),
month=(self.month if self.month is not None else
other.month),
day=(self.day if self.day is not None else
other.day),
weekday=(self.weekday if self.weekday is not None else
other.weekday),
hour=(self.hour if self.hour is not None else
other.hour),
minute=(self.minute if self.minute is not None else
other.minute),
second=(self.second if self.second is not None else
other.second),
microsecond=(self.microsecond if self.microsecond
is not None else
other.microsecond))
def __abs__(self):
return self.__class__(years=abs(self.years),
months=abs(self.months),
days=abs(self.days),
hours=abs(self.hours),
minutes=abs(self.minutes),
seconds=abs(self.seconds),
microseconds=abs(self.microseconds),
leapdays=self.leapdays,
year=self.year,
month=self.month,
day=self.day,
weekday=self.weekday,
hour=self.hour,
minute=self.minute,
second=self.second,
microsecond=self.microsecond)
def __neg__(self):
return self.__class__(years=-self.years,
months=-self.months,
days=-self.days,
hours=-self.hours,
minutes=-self.minutes,
seconds=-self.seconds,
microseconds=-self.microseconds,
leapdays=self.leapdays,
year=self.year,
month=self.month,
day=self.day,
weekday=self.weekday,
hour=self.hour,
minute=self.minute,
second=self.second,
microsecond=self.microsecond)
def __bool__(self):
return not (not self.years and
not self.months and
not self.days and
not self.hours and
not self.minutes and
not self.seconds and
not self.microseconds and
not self.leapdays and
self.year is None and
self.month is None and
self.day is None and
self.weekday is None and
self.hour is None and
self.minute is None and
self.second is None and
self.microsecond is None)
# Compatibility with Python 2.x
__nonzero__ = __bool__
def __mul__(self, other):
try:
f = float(other)
except TypeError:
return NotImplemented
return self.__class__(years=int(self.years * f),
months=int(self.months * f),
days=int(self.days * f),
hours=int(self.hours * f),
minutes=int(self.minutes * f),
seconds=int(self.seconds * f),
microseconds=int(self.microseconds * f),
leapdays=self.leapdays,
year=self.year,
month=self.month,
day=self.day,
weekday=self.weekday,
hour=self.hour,
minute=self.minute,
second=self.second,
microsecond=self.microsecond)
__rmul__ = __mul__
def __eq__(self, other):
if not isinstance(other, relativedelta):
return NotImplemented
if self.weekday or other.weekday:
if not self.weekday or not other.weekday:
return False
if self.weekday.weekday != other.weekday.weekday:
return False
n1, n2 = self.weekday.n, other.weekday.n
if n1 != n2 and not ((not n1 or n1 == 1) and (not n2 or n2 == 1)):
return False
return (self.years == other.years and
self.months == other.months and
self.days == other.days and
self.hours == other.hours and
self.minutes == other.minutes and
self.seconds == other.seconds and
self.microseconds == other.microseconds and
self.leapdays == other.leapdays and
self.year == other.year and
self.month == other.month and
self.day == other.day and
self.hour == other.hour and
self.minute == other.minute and
self.second == other.second and
self.microsecond == other.microsecond)
def __hash__(self):
return hash((
self.weekday,
self.years,
self.months,
self.days,
self.hours,
self.minutes,
self.seconds,
self.microseconds,
self.leapdays,
self.year,
self.month,
self.day,
self.hour,
self.minute,
self.second,
self.microsecond,
))
def __ne__(self, other):
return not self.__eq__(other)
def __div__(self, other):
try:
reciprocal = 1 / float(other)
except TypeError:
return NotImplemented
return self.__mul__(reciprocal)
__truediv__ = __div__
def __repr__(self):
l = []
for attr in ["years", "months", "days", "leapdays",
"hours", "minutes", "seconds", "microseconds"]:
value = getattr(self, attr)
if value:
l.append("{attr}={value:+g}".format(attr=attr, value=value))
for attr in ["year", "month", "day", "weekday",
"hour", "minute", "second", "microsecond"]:
value = getattr(self, attr)
if value is not None:
l.append("{attr}={value}".format(attr=attr, value=repr(value)))
return "{classname}({attrs})".format(classname=self.__class__.__name__,
attrs=", ".join(l))
def _sign(x):
return int(copysign(1, x))
# vim:ts=4:sw=4:et

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@ -0,0 +1,891 @@
# Copyright (c) 2010-2017 Benjamin Peterson
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
"""Utilities for writing code that runs on Python 2 and 3"""
from __future__ import absolute_import
import functools
import itertools
import operator
import sys
import types
__author__ = "Benjamin Peterson <benjamin@python.org>"
__version__ = "1.11.0"
# Useful for very coarse version differentiation.
PY2 = sys.version_info[0] == 2
PY3 = sys.version_info[0] == 3
PY34 = sys.version_info[0:2] >= (3, 4)
if PY3:
string_types = str,
integer_types = int,
class_types = type,
text_type = str
binary_type = bytes
MAXSIZE = sys.maxsize
else:
string_types = basestring,
integer_types = (int, long)
class_types = (type, types.ClassType)
text_type = unicode
binary_type = str
if sys.platform.startswith("java"):
# Jython always uses 32 bits.
MAXSIZE = int((1 << 31) - 1)
else:
# It's possible to have sizeof(long) != sizeof(Py_ssize_t).
class X(object):
def __len__(self):
return 1 << 31
try:
len(X())
except OverflowError:
# 32-bit
MAXSIZE = int((1 << 31) - 1)
else:
# 64-bit
MAXSIZE = int((1 << 63) - 1)
del X
def _add_doc(func, doc):
"""Add documentation to a function."""
func.__doc__ = doc
def _import_module(name):
"""Import module, returning the module after the last dot."""
__import__(name)
return sys.modules[name]
class _LazyDescr(object):
def __init__(self, name):
self.name = name
def __get__(self, obj, tp):
result = self._resolve()
setattr(obj, self.name, result) # Invokes __set__.
try:
# This is a bit ugly, but it avoids running this again by
# removing this descriptor.
delattr(obj.__class__, self.name)
except AttributeError:
pass
return result
class MovedModule(_LazyDescr):
def __init__(self, name, old, new=None):
super(MovedModule, self).__init__(name)
if PY3:
if new is None:
new = name
self.mod = new
else:
self.mod = old
def _resolve(self):
return _import_module(self.mod)
def __getattr__(self, attr):
_module = self._resolve()
value = getattr(_module, attr)
setattr(self, attr, value)
return value
class _LazyModule(types.ModuleType):
def __init__(self, name):
super(_LazyModule, self).__init__(name)
self.__doc__ = self.__class__.__doc__
def __dir__(self):
attrs = ["__doc__", "__name__"]
attrs += [attr.name for attr in self._moved_attributes]
return attrs
# Subclasses should override this
_moved_attributes = []
class MovedAttribute(_LazyDescr):
def __init__(self, name, old_mod, new_mod, old_attr=None, new_attr=None):
super(MovedAttribute, self).__init__(name)
if PY3:
if new_mod is None:
new_mod = name
self.mod = new_mod
if new_attr is None:
if old_attr is None:
new_attr = name
else:
new_attr = old_attr
self.attr = new_attr
else:
self.mod = old_mod
if old_attr is None:
old_attr = name
self.attr = old_attr
def _resolve(self):
module = _import_module(self.mod)
return getattr(module, self.attr)
class _SixMetaPathImporter(object):
"""
A meta path importer to import six.moves and its submodules.
This class implements a PEP302 finder and loader. It should be compatible
with Python 2.5 and all existing versions of Python3
"""
def __init__(self, six_module_name):
self.name = six_module_name
self.known_modules = {}
def _add_module(self, mod, *fullnames):
for fullname in fullnames:
self.known_modules[self.name + "." + fullname] = mod
def _get_module(self, fullname):
return self.known_modules[self.name + "." + fullname]
def find_module(self, fullname, path=None):
if fullname in self.known_modules:
return self
return None
def __get_module(self, fullname):
try:
return self.known_modules[fullname]
except KeyError:
raise ImportError("This loader does not know module " + fullname)
def load_module(self, fullname):
try:
# in case of a reload
return sys.modules[fullname]
except KeyError:
pass
mod = self.__get_module(fullname)
if isinstance(mod, MovedModule):
mod = mod._resolve()
else:
mod.__loader__ = self
sys.modules[fullname] = mod
return mod
def is_package(self, fullname):
"""
Return true, if the named module is a package.
We need this method to get correct spec objects with
Python 3.4 (see PEP451)
"""
return hasattr(self.__get_module(fullname), "__path__")
def get_code(self, fullname):
"""Return None
Required, if is_package is implemented"""
self.__get_module(fullname) # eventually raises ImportError
return None
get_source = get_code # same as get_code
_importer = _SixMetaPathImporter(__name__)
class _MovedItems(_LazyModule):
"""Lazy loading of moved objects"""
__path__ = [] # mark as package
_moved_attributes = [
MovedAttribute("cStringIO", "cStringIO", "io", "StringIO"),
MovedAttribute("filter", "itertools", "builtins", "ifilter", "filter"),
MovedAttribute("filterfalse", "itertools", "itertools", "ifilterfalse", "filterfalse"),
MovedAttribute("input", "__builtin__", "builtins", "raw_input", "input"),
MovedAttribute("intern", "__builtin__", "sys"),
MovedAttribute("map", "itertools", "builtins", "imap", "map"),
MovedAttribute("getcwd", "os", "os", "getcwdu", "getcwd"),
MovedAttribute("getcwdb", "os", "os", "getcwd", "getcwdb"),
MovedAttribute("getoutput", "commands", "subprocess"),
MovedAttribute("range", "__builtin__", "builtins", "xrange", "range"),
MovedAttribute("reload_module", "__builtin__", "importlib" if PY34 else "imp", "reload"),
MovedAttribute("reduce", "__builtin__", "functools"),
MovedAttribute("shlex_quote", "pipes", "shlex", "quote"),
MovedAttribute("StringIO", "StringIO", "io"),
MovedAttribute("UserDict", "UserDict", "collections"),
MovedAttribute("UserList", "UserList", "collections"),
MovedAttribute("UserString", "UserString", "collections"),
MovedAttribute("xrange", "__builtin__", "builtins", "xrange", "range"),
MovedAttribute("zip", "itertools", "builtins", "izip", "zip"),
MovedAttribute("zip_longest", "itertools", "itertools", "izip_longest", "zip_longest"),
MovedModule("builtins", "__builtin__"),
MovedModule("configparser", "ConfigParser"),
MovedModule("copyreg", "copy_reg"),
MovedModule("dbm_gnu", "gdbm", "dbm.gnu"),
MovedModule("_dummy_thread", "dummy_thread", "_dummy_thread"),
MovedModule("http_cookiejar", "cookielib", "http.cookiejar"),
MovedModule("http_cookies", "Cookie", "http.cookies"),
MovedModule("html_entities", "htmlentitydefs", "html.entities"),
MovedModule("html_parser", "HTMLParser", "html.parser"),
MovedModule("http_client", "httplib", "http.client"),
MovedModule("email_mime_base", "email.MIMEBase", "email.mime.base"),
MovedModule("email_mime_image", "email.MIMEImage", "email.mime.image"),
MovedModule("email_mime_multipart", "email.MIMEMultipart", "email.mime.multipart"),
MovedModule("email_mime_nonmultipart", "email.MIMENonMultipart", "email.mime.nonmultipart"),
MovedModule("email_mime_text", "email.MIMEText", "email.mime.text"),
MovedModule("BaseHTTPServer", "BaseHTTPServer", "http.server"),
MovedModule("CGIHTTPServer", "CGIHTTPServer", "http.server"),
MovedModule("SimpleHTTPServer", "SimpleHTTPServer", "http.server"),
MovedModule("cPickle", "cPickle", "pickle"),
MovedModule("queue", "Queue"),
MovedModule("reprlib", "repr"),
MovedModule("socketserver", "SocketServer"),
MovedModule("_thread", "thread", "_thread"),
MovedModule("tkinter", "Tkinter"),
MovedModule("tkinter_dialog", "Dialog", "tkinter.dialog"),
MovedModule("tkinter_filedialog", "FileDialog", "tkinter.filedialog"),
MovedModule("tkinter_scrolledtext", "ScrolledText", "tkinter.scrolledtext"),
MovedModule("tkinter_simpledialog", "SimpleDialog", "tkinter.simpledialog"),
MovedModule("tkinter_tix", "Tix", "tkinter.tix"),
MovedModule("tkinter_ttk", "ttk", "tkinter.ttk"),
MovedModule("tkinter_constants", "Tkconstants", "tkinter.constants"),
MovedModule("tkinter_dnd", "Tkdnd", "tkinter.dnd"),
MovedModule("tkinter_colorchooser", "tkColorChooser",
"tkinter.colorchooser"),
MovedModule("tkinter_commondialog", "tkCommonDialog",
"tkinter.commondialog"),
MovedModule("tkinter_tkfiledialog", "tkFileDialog", "tkinter.filedialog"),
MovedModule("tkinter_font", "tkFont", "tkinter.font"),
MovedModule("tkinter_messagebox", "tkMessageBox", "tkinter.messagebox"),
MovedModule("tkinter_tksimpledialog", "tkSimpleDialog",
"tkinter.simpledialog"),
MovedModule("urllib_parse", __name__ + ".moves.urllib_parse", "urllib.parse"),
MovedModule("urllib_error", __name__ + ".moves.urllib_error", "urllib.error"),
MovedModule("urllib", __name__ + ".moves.urllib", __name__ + ".moves.urllib"),
MovedModule("urllib_robotparser", "robotparser", "urllib.robotparser"),
MovedModule("xmlrpc_client", "xmlrpclib", "xmlrpc.client"),
MovedModule("xmlrpc_server", "SimpleXMLRPCServer", "xmlrpc.server"),
]
# Add windows specific modules.
if sys.platform == "win32":
_moved_attributes += [
MovedModule("winreg", "_winreg"),
]
for attr in _moved_attributes:
setattr(_MovedItems, attr.name, attr)
if isinstance(attr, MovedModule):
_importer._add_module(attr, "moves." + attr.name)
del attr
_MovedItems._moved_attributes = _moved_attributes
moves = _MovedItems(__name__ + ".moves")
_importer._add_module(moves, "moves")
class Module_six_moves_urllib_parse(_LazyModule):
"""Lazy loading of moved objects in six.moves.urllib_parse"""
_urllib_parse_moved_attributes = [
MovedAttribute("ParseResult", "urlparse", "urllib.parse"),
MovedAttribute("SplitResult", "urlparse", "urllib.parse"),
MovedAttribute("parse_qs", "urlparse", "urllib.parse"),
MovedAttribute("parse_qsl", "urlparse", "urllib.parse"),
MovedAttribute("urldefrag", "urlparse", "urllib.parse"),
MovedAttribute("urljoin", "urlparse", "urllib.parse"),
MovedAttribute("urlparse", "urlparse", "urllib.parse"),
MovedAttribute("urlsplit", "urlparse", "urllib.parse"),
MovedAttribute("urlunparse", "urlparse", "urllib.parse"),
MovedAttribute("urlunsplit", "urlparse", "urllib.parse"),
MovedAttribute("quote", "urllib", "urllib.parse"),
MovedAttribute("quote_plus", "urllib", "urllib.parse"),
MovedAttribute("unquote", "urllib", "urllib.parse"),
MovedAttribute("unquote_plus", "urllib", "urllib.parse"),
MovedAttribute("unquote_to_bytes", "urllib", "urllib.parse", "unquote", "unquote_to_bytes"),
MovedAttribute("urlencode", "urllib", "urllib.parse"),
MovedAttribute("splitquery", "urllib", "urllib.parse"),
MovedAttribute("splittag", "urllib", "urllib.parse"),
MovedAttribute("splituser", "urllib", "urllib.parse"),
MovedAttribute("splitvalue", "urllib", "urllib.parse"),
MovedAttribute("uses_fragment", "urlparse", "urllib.parse"),
MovedAttribute("uses_netloc", "urlparse", "urllib.parse"),
MovedAttribute("uses_params", "urlparse", "urllib.parse"),
MovedAttribute("uses_query", "urlparse", "urllib.parse"),
MovedAttribute("uses_relative", "urlparse", "urllib.parse"),
]
for attr in _urllib_parse_moved_attributes:
setattr(Module_six_moves_urllib_parse, attr.name, attr)
del attr
Module_six_moves_urllib_parse._moved_attributes = _urllib_parse_moved_attributes
_importer._add_module(Module_six_moves_urllib_parse(__name__ + ".moves.urllib_parse"),
"moves.urllib_parse", "moves.urllib.parse")
class Module_six_moves_urllib_error(_LazyModule):
"""Lazy loading of moved objects in six.moves.urllib_error"""
_urllib_error_moved_attributes = [
MovedAttribute("URLError", "urllib2", "urllib.error"),
MovedAttribute("HTTPError", "urllib2", "urllib.error"),
MovedAttribute("ContentTooShortError", "urllib", "urllib.error"),
]
for attr in _urllib_error_moved_attributes:
setattr(Module_six_moves_urllib_error, attr.name, attr)
del attr
Module_six_moves_urllib_error._moved_attributes = _urllib_error_moved_attributes
_importer._add_module(Module_six_moves_urllib_error(__name__ + ".moves.urllib.error"),
"moves.urllib_error", "moves.urllib.error")
class Module_six_moves_urllib_request(_LazyModule):
"""Lazy loading of moved objects in six.moves.urllib_request"""
_urllib_request_moved_attributes = [
MovedAttribute("urlopen", "urllib2", "urllib.request"),
MovedAttribute("install_opener", "urllib2", "urllib.request"),
MovedAttribute("build_opener", "urllib2", "urllib.request"),
MovedAttribute("pathname2url", "urllib", "urllib.request"),
MovedAttribute("url2pathname", "urllib", "urllib.request"),
MovedAttribute("getproxies", "urllib", "urllib.request"),
MovedAttribute("Request", "urllib2", "urllib.request"),
MovedAttribute("OpenerDirector", "urllib2", "urllib.request"),
MovedAttribute("HTTPDefaultErrorHandler", "urllib2", "urllib.request"),
MovedAttribute("HTTPRedirectHandler", "urllib2", "urllib.request"),
MovedAttribute("HTTPCookieProcessor", "urllib2", "urllib.request"),
MovedAttribute("ProxyHandler", "urllib2", "urllib.request"),
MovedAttribute("BaseHandler", "urllib2", "urllib.request"),
MovedAttribute("HTTPPasswordMgr", "urllib2", "urllib.request"),
MovedAttribute("HTTPPasswordMgrWithDefaultRealm", "urllib2", "urllib.request"),
MovedAttribute("AbstractBasicAuthHandler", "urllib2", "urllib.request"),
MovedAttribute("HTTPBasicAuthHandler", "urllib2", "urllib.request"),
MovedAttribute("ProxyBasicAuthHandler", "urllib2", "urllib.request"),
MovedAttribute("AbstractDigestAuthHandler", "urllib2", "urllib.request"),
MovedAttribute("HTTPDigestAuthHandler", "urllib2", "urllib.request"),
MovedAttribute("ProxyDigestAuthHandler", "urllib2", "urllib.request"),
MovedAttribute("HTTPHandler", "urllib2", "urllib.request"),
MovedAttribute("HTTPSHandler", "urllib2", "urllib.request"),
MovedAttribute("FileHandler", "urllib2", "urllib.request"),
MovedAttribute("FTPHandler", "urllib2", "urllib.request"),
MovedAttribute("CacheFTPHandler", "urllib2", "urllib.request"),
MovedAttribute("UnknownHandler", "urllib2", "urllib.request"),
MovedAttribute("HTTPErrorProcessor", "urllib2", "urllib.request"),
MovedAttribute("urlretrieve", "urllib", "urllib.request"),
MovedAttribute("urlcleanup", "urllib", "urllib.request"),
MovedAttribute("URLopener", "urllib", "urllib.request"),
MovedAttribute("FancyURLopener", "urllib", "urllib.request"),
MovedAttribute("proxy_bypass", "urllib", "urllib.request"),
MovedAttribute("parse_http_list", "urllib2", "urllib.request"),
MovedAttribute("parse_keqv_list", "urllib2", "urllib.request"),
]
for attr in _urllib_request_moved_attributes:
setattr(Module_six_moves_urllib_request, attr.name, attr)
del attr
Module_six_moves_urllib_request._moved_attributes = _urllib_request_moved_attributes
_importer._add_module(Module_six_moves_urllib_request(__name__ + ".moves.urllib.request"),
"moves.urllib_request", "moves.urllib.request")
class Module_six_moves_urllib_response(_LazyModule):
"""Lazy loading of moved objects in six.moves.urllib_response"""
_urllib_response_moved_attributes = [
MovedAttribute("addbase", "urllib", "urllib.response"),
MovedAttribute("addclosehook", "urllib", "urllib.response"),
MovedAttribute("addinfo", "urllib", "urllib.response"),
MovedAttribute("addinfourl", "urllib", "urllib.response"),
]
for attr in _urllib_response_moved_attributes:
setattr(Module_six_moves_urllib_response, attr.name, attr)
del attr
Module_six_moves_urllib_response._moved_attributes = _urllib_response_moved_attributes
_importer._add_module(Module_six_moves_urllib_response(__name__ + ".moves.urllib.response"),
"moves.urllib_response", "moves.urllib.response")
class Module_six_moves_urllib_robotparser(_LazyModule):
"""Lazy loading of moved objects in six.moves.urllib_robotparser"""
_urllib_robotparser_moved_attributes = [
MovedAttribute("RobotFileParser", "robotparser", "urllib.robotparser"),
]
for attr in _urllib_robotparser_moved_attributes:
setattr(Module_six_moves_urllib_robotparser, attr.name, attr)
del attr
Module_six_moves_urllib_robotparser._moved_attributes = _urllib_robotparser_moved_attributes
_importer._add_module(Module_six_moves_urllib_robotparser(__name__ + ".moves.urllib.robotparser"),
"moves.urllib_robotparser", "moves.urllib.robotparser")
class Module_six_moves_urllib(types.ModuleType):
"""Create a six.moves.urllib namespace that resembles the Python 3 namespace"""
__path__ = [] # mark as package
parse = _importer._get_module("moves.urllib_parse")
error = _importer._get_module("moves.urllib_error")
request = _importer._get_module("moves.urllib_request")
response = _importer._get_module("moves.urllib_response")
robotparser = _importer._get_module("moves.urllib_robotparser")
def __dir__(self):
return ['parse', 'error', 'request', 'response', 'robotparser']
_importer._add_module(Module_six_moves_urllib(__name__ + ".moves.urllib"),
"moves.urllib")
def add_move(move):
"""Add an item to six.moves."""
setattr(_MovedItems, move.name, move)
def remove_move(name):
"""Remove item from six.moves."""
try:
delattr(_MovedItems, name)
except AttributeError:
try:
del moves.__dict__[name]
except KeyError:
raise AttributeError("no such move, %r" % (name,))
if PY3:
_meth_func = "__func__"
_meth_self = "__self__"
_func_closure = "__closure__"
_func_code = "__code__"
_func_defaults = "__defaults__"
_func_globals = "__globals__"
else:
_meth_func = "im_func"
_meth_self = "im_self"
_func_closure = "func_closure"
_func_code = "func_code"
_func_defaults = "func_defaults"
_func_globals = "func_globals"
try:
advance_iterator = next
except NameError:
def advance_iterator(it):
return it.next()
next = advance_iterator
try:
callable = callable
except NameError:
def callable(obj):
return any("__call__" in klass.__dict__ for klass in type(obj).__mro__)
if PY3:
def get_unbound_function(unbound):
return unbound
create_bound_method = types.MethodType
def create_unbound_method(func, cls):
return func
Iterator = object
else:
def get_unbound_function(unbound):
return unbound.im_func
def create_bound_method(func, obj):
return types.MethodType(func, obj, obj.__class__)
def create_unbound_method(func, cls):
return types.MethodType(func, None, cls)
class Iterator(object):
def next(self):
return type(self).__next__(self)
callable = callable
_add_doc(get_unbound_function,
"""Get the function out of a possibly unbound function""")
get_method_function = operator.attrgetter(_meth_func)
get_method_self = operator.attrgetter(_meth_self)
get_function_closure = operator.attrgetter(_func_closure)
get_function_code = operator.attrgetter(_func_code)
get_function_defaults = operator.attrgetter(_func_defaults)
get_function_globals = operator.attrgetter(_func_globals)
if PY3:
def iterkeys(d, **kw):
return iter(d.keys(**kw))
def itervalues(d, **kw):
return iter(d.values(**kw))
def iteritems(d, **kw):
return iter(d.items(**kw))
def iterlists(d, **kw):
return iter(d.lists(**kw))
viewkeys = operator.methodcaller("keys")
viewvalues = operator.methodcaller("values")
viewitems = operator.methodcaller("items")
else:
def iterkeys(d, **kw):
return d.iterkeys(**kw)
def itervalues(d, **kw):
return d.itervalues(**kw)
def iteritems(d, **kw):
return d.iteritems(**kw)
def iterlists(d, **kw):
return d.iterlists(**kw)
viewkeys = operator.methodcaller("viewkeys")
viewvalues = operator.methodcaller("viewvalues")
viewitems = operator.methodcaller("viewitems")
_add_doc(iterkeys, "Return an iterator over the keys of a dictionary.")
_add_doc(itervalues, "Return an iterator over the values of a dictionary.")
_add_doc(iteritems,
"Return an iterator over the (key, value) pairs of a dictionary.")
_add_doc(iterlists,
"Return an iterator over the (key, [values]) pairs of a dictionary.")
if PY3:
def b(s):
return s.encode("latin-1")
def u(s):
return s
unichr = chr
import struct
int2byte = struct.Struct(">B").pack
del struct
byte2int = operator.itemgetter(0)
indexbytes = operator.getitem
iterbytes = iter
import io
StringIO = io.StringIO
BytesIO = io.BytesIO
_assertCountEqual = "assertCountEqual"
if sys.version_info[1] <= 1:
_assertRaisesRegex = "assertRaisesRegexp"
_assertRegex = "assertRegexpMatches"
else:
_assertRaisesRegex = "assertRaisesRegex"
_assertRegex = "assertRegex"
else:
def b(s):
return s
# Workaround for standalone backslash
def u(s):
return unicode(s.replace(r'\\', r'\\\\'), "unicode_escape")
unichr = unichr
int2byte = chr
def byte2int(bs):
return ord(bs[0])
def indexbytes(buf, i):
return ord(buf[i])
iterbytes = functools.partial(itertools.imap, ord)
import StringIO
StringIO = BytesIO = StringIO.StringIO
_assertCountEqual = "assertItemsEqual"
_assertRaisesRegex = "assertRaisesRegexp"
_assertRegex = "assertRegexpMatches"
_add_doc(b, """Byte literal""")
_add_doc(u, """Text literal""")
def assertCountEqual(self, *args, **kwargs):
return getattr(self, _assertCountEqual)(*args, **kwargs)
def assertRaisesRegex(self, *args, **kwargs):
return getattr(self, _assertRaisesRegex)(*args, **kwargs)
def assertRegex(self, *args, **kwargs):
return getattr(self, _assertRegex)(*args, **kwargs)
if PY3:
exec_ = getattr(moves.builtins, "exec")
def reraise(tp, value, tb=None):
try:
if value is None:
value = tp()
if value.__traceback__ is not tb:
raise value.with_traceback(tb)
raise value
finally:
value = None
tb = None
else:
def exec_(_code_, _globs_=None, _locs_=None):
"""Execute code in a namespace."""
if _globs_ is None:
frame = sys._getframe(1)
_globs_ = frame.f_globals
if _locs_ is None:
_locs_ = frame.f_locals
del frame
elif _locs_ is None:
_locs_ = _globs_
exec("""exec _code_ in _globs_, _locs_""")
exec_("""def reraise(tp, value, tb=None):
try:
raise tp, value, tb
finally:
tb = None
""")
if sys.version_info[:2] == (3, 2):
exec_("""def raise_from(value, from_value):
try:
if from_value is None:
raise value
raise value from from_value
finally:
value = None
""")
elif sys.version_info[:2] > (3, 2):
exec_("""def raise_from(value, from_value):
try:
raise value from from_value
finally:
value = None
""")
else:
def raise_from(value, from_value):
raise value
print_ = getattr(moves.builtins, "print", None)
if print_ is None:
def print_(*args, **kwargs):
"""The new-style print function for Python 2.4 and 2.5."""
fp = kwargs.pop("file", sys.stdout)
if fp is None:
return
def write(data):
if not isinstance(data, basestring):
data = str(data)
# If the file has an encoding, encode unicode with it.
if (isinstance(fp, file) and
isinstance(data, unicode) and
fp.encoding is not None):
errors = getattr(fp, "errors", None)
if errors is None:
errors = "strict"
data = data.encode(fp.encoding, errors)
fp.write(data)
want_unicode = False
sep = kwargs.pop("sep", None)
if sep is not None:
if isinstance(sep, unicode):
want_unicode = True
elif not isinstance(sep, str):
raise TypeError("sep must be None or a string")
end = kwargs.pop("end", None)
if end is not None:
if isinstance(end, unicode):
want_unicode = True
elif not isinstance(end, str):
raise TypeError("end must be None or a string")
if kwargs:
raise TypeError("invalid keyword arguments to print()")
if not want_unicode:
for arg in args:
if isinstance(arg, unicode):
want_unicode = True
break
if want_unicode:
newline = unicode("\n")
space = unicode(" ")
else:
newline = "\n"
space = " "
if sep is None:
sep = space
if end is None:
end = newline
for i, arg in enumerate(args):
if i:
write(sep)
write(arg)
write(end)
if sys.version_info[:2] < (3, 3):
_print = print_
def print_(*args, **kwargs):
fp = kwargs.get("file", sys.stdout)
flush = kwargs.pop("flush", False)
_print(*args, **kwargs)
if flush and fp is not None:
fp.flush()
_add_doc(reraise, """Reraise an exception.""")
if sys.version_info[0:2] < (3, 4):
def wraps(wrapped, assigned=functools.WRAPPER_ASSIGNMENTS,
updated=functools.WRAPPER_UPDATES):
def wrapper(f):
f = functools.wraps(wrapped, assigned, updated)(f)
f.__wrapped__ = wrapped
return f
return wrapper
else:
wraps = functools.wraps
def with_metaclass(meta, *bases):
"""Create a base class with a metaclass."""
# This requires a bit of explanation: the basic idea is to make a dummy
# metaclass for one level of class instantiation that replaces itself with
# the actual metaclass.
class metaclass(type):
def __new__(cls, name, this_bases, d):
return meta(name, bases, d)
@classmethod
def __prepare__(cls, name, this_bases):
return meta.__prepare__(name, bases)
return type.__new__(metaclass, 'temporary_class', (), {})
def add_metaclass(metaclass):
"""Class decorator for creating a class with a metaclass."""
def wrapper(cls):
orig_vars = cls.__dict__.copy()
slots = orig_vars.get('__slots__')
if slots is not None:
if isinstance(slots, str):
slots = [slots]
for slots_var in slots:
orig_vars.pop(slots_var)
orig_vars.pop('__dict__', None)
orig_vars.pop('__weakref__', None)
return metaclass(cls.__name__, cls.__bases__, orig_vars)
return wrapper
def python_2_unicode_compatible(klass):
"""
A decorator that defines __unicode__ and __str__ methods under Python 2.
Under Python 3 it does nothing.
To support Python 2 and 3 with a single code base, define a __str__ method
returning text and apply this decorator to the class.
"""
if PY2:
if '__str__' not in klass.__dict__:
raise ValueError("@python_2_unicode_compatible cannot be applied "
"to %s because it doesn't define __str__()." %
klass.__name__)
klass.__unicode__ = klass.__str__
klass.__str__ = lambda self: self.__unicode__().encode('utf-8')
return klass
# Complete the moves implementation.
# This code is at the end of this module to speed up module loading.
# Turn this module into a package.
__path__ = [] # required for PEP 302 and PEP 451
__package__ = __name__ # see PEP 366 @ReservedAssignment
if globals().get("__spec__") is not None:
__spec__.submodule_search_locations = [] # PEP 451 @UndefinedVariable
# Remove other six meta path importers, since they cause problems. This can
# happen if six is removed from sys.modules and then reloaded. (Setuptools does
# this for some reason.)
if sys.meta_path:
for i, importer in enumerate(sys.meta_path):
# Here's some real nastiness: Another "instance" of the six module might
# be floating around. Therefore, we can't use isinstance() to check for
# the six meta path importer, since the other six instance will have
# inserted an importer with different class.
if (type(importer).__name__ == "_SixMetaPathImporter" and
importer.name == __name__):
del sys.meta_path[i]
break
del i, importer
# Finally, add the importer to the meta path import hook.
sys.meta_path.append(_importer)

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from __future__ import unicode_literals
import os
import time
import subprocess
import warnings
import tempfile
import pickle
class WarningTestMixin(object):
# Based on https://stackoverflow.com/a/12935176/467366
class _AssertWarnsContext(warnings.catch_warnings):
def __init__(self, expected_warnings, parent, **kwargs):
super(WarningTestMixin._AssertWarnsContext, self).__init__(**kwargs)
self.parent = parent
try:
self.expected_warnings = list(expected_warnings)
except TypeError:
self.expected_warnings = [expected_warnings]
self._warning_log = []
def __enter__(self, *args, **kwargs):
rv = super(WarningTestMixin._AssertWarnsContext, self).__enter__(*args, **kwargs)
if self._showwarning is not self._module.showwarning:
super_showwarning = self._module.showwarning
else:
super_showwarning = None
def showwarning(*args, **kwargs):
if super_showwarning is not None:
super_showwarning(*args, **kwargs)
self._warning_log.append(warnings.WarningMessage(*args, **kwargs))
self._module.showwarning = showwarning
return rv
def __exit__(self, *args, **kwargs):
super(WarningTestMixin._AssertWarnsContext, self).__exit__(self, *args, **kwargs)
self.parent.assertTrue(any(issubclass(item.category, warning)
for warning in self.expected_warnings
for item in self._warning_log))
def assertWarns(self, warning, callable=None, *args, **kwargs):
warnings.simplefilter('always')
context = self.__class__._AssertWarnsContext(warning, self)
if callable is None:
return context
else:
with context:
callable(*args, **kwargs)
class PicklableMixin(object):
def _get_nobj_bytes(self, obj, dump_kwargs, load_kwargs):
"""
Pickle and unpickle an object using ``pickle.dumps`` / ``pickle.loads``
"""
pkl = pickle.dumps(obj, **dump_kwargs)
return pickle.loads(pkl, **load_kwargs)
def _get_nobj_file(self, obj, dump_kwargs, load_kwargs):
"""
Pickle and unpickle an object using ``pickle.dump`` / ``pickle.load`` on
a temporary file.
"""
with tempfile.TemporaryFile('w+b') as pkl:
pickle.dump(obj, pkl, **dump_kwargs)
pkl.seek(0) # Reset the file to the beginning to read it
nobj = pickle.load(pkl, **load_kwargs)
return nobj
def assertPicklable(self, obj, singleton=False, asfile=False,
dump_kwargs=None, load_kwargs=None):
"""
Assert that an object can be pickled and unpickled. This assertion
assumes that the desired behavior is that the unpickled object compares
equal to the original object, but is not the same object.
"""
get_nobj = self._get_nobj_file if asfile else self._get_nobj_bytes
dump_kwargs = dump_kwargs or {}
load_kwargs = load_kwargs or {}
nobj = get_nobj(obj, dump_kwargs, load_kwargs)
if not singleton:
self.assertIsNot(obj, nobj)
self.assertEqual(obj, nobj)
class TZContextBase(object):
"""
Base class for a context manager which allows changing of time zones.
Subclasses may define a guard variable to either block or or allow time
zone changes by redefining ``_guard_var_name`` and ``_guard_allows_change``.
The default is that the guard variable must be affirmatively set.
Subclasses must define ``get_current_tz`` and ``set_current_tz``.
"""
_guard_var_name = "DATEUTIL_MAY_CHANGE_TZ"
_guard_allows_change = True
def __init__(self, tzval):
self.tzval = tzval
self._old_tz = None
@classmethod
def tz_change_allowed(cls):
"""
Class method used to query whether or not this class allows time zone
changes.
"""
guard = bool(os.environ.get(cls._guard_var_name, False))
# _guard_allows_change gives the "default" behavior - if True, the
# guard is overcoming a block. If false, the guard is causing a block.
# Whether tz_change is allowed is therefore the XNOR of the two.
return guard == cls._guard_allows_change
@classmethod
def tz_change_disallowed_message(cls):
""" Generate instructions on how to allow tz changes """
msg = ('Changing time zone not allowed. Set {envar} to {gval} '
'if you would like to allow this behavior')
return msg.format(envar=cls._guard_var_name,
gval=cls._guard_allows_change)
def __enter__(self):
if not self.tz_change_allowed():
raise ValueError(self.tz_change_disallowed_message())
self._old_tz = self.get_current_tz()
self.set_current_tz(self.tzval)
def __exit__(self, type, value, traceback):
if self._old_tz is not None:
self.set_current_tz(self._old_tz)
self._old_tz = None
def get_current_tz(self):
raise NotImplementedError
def set_current_tz(self):
raise NotImplementedError
class TZEnvContext(TZContextBase):
"""
Context manager that temporarily sets the `TZ` variable (for use on
*nix-like systems). Because the effect is local to the shell anyway, this
will apply *unless* a guard is set.
If you do not want the TZ environment variable set, you may set the
``DATEUTIL_MAY_NOT_CHANGE_TZ_VAR`` variable to a truthy value.
"""
_guard_var_name = "DATEUTIL_MAY_NOT_CHANGE_TZ_VAR"
_guard_allows_change = False
def get_current_tz(self):
return os.environ.get('TZ', UnsetTz)
def set_current_tz(self, tzval):
if tzval is UnsetTz and 'TZ' in os.environ:
del os.environ['TZ']
else:
os.environ['TZ'] = tzval
time.tzset()
class TZWinContext(TZContextBase):
"""
Context manager for changing local time zone on Windows.
Because the effect of this is system-wide and global, it may have
unintended side effect. Set the ``DATEUTIL_MAY_CHANGE_TZ`` environment
variable to a truthy value before using this context manager.
"""
def get_current_tz(self):
p = subprocess.Popen(['tzutil', '/g'], stdout=subprocess.PIPE)
ctzname, err = p.communicate()
ctzname = ctzname.decode() # Popen returns
if p.returncode:
raise OSError('Failed to get current time zone: ' + err)
return ctzname
def set_current_tz(self, tzname):
p = subprocess.Popen('tzutil /s "' + tzname + '"')
out, err = p.communicate()
if p.returncode:
raise OSError('Failed to set current time zone: ' +
(err or 'Unknown error.'))
###
# Utility classes
class NotAValueClass(object):
"""
A class analogous to NaN that has operations defined for any type.
"""
def _op(self, other):
return self # Operation with NotAValue returns NotAValue
def _cmp(self, other):
return False
__add__ = __radd__ = _op
__sub__ = __rsub__ = _op
__mul__ = __rmul__ = _op
__div__ = __rdiv__ = _op
__truediv__ = __rtruediv__ = _op
__floordiv__ = __rfloordiv__ = _op
__lt__ = __rlt__ = _op
__gt__ = __rgt__ = _op
__eq__ = __req__ = _op
__le__ = __rle__ = _op
__ge__ = __rge__ = _op
NotAValue = NotAValueClass()
class ComparesEqualClass(object):
"""
A class that is always equal to whatever you compare it to.
"""
def __eq__(self, other):
return True
def __ne__(self, other):
return False
def __le__(self, other):
return True
def __ge__(self, other):
return True
def __lt__(self, other):
return False
def __gt__(self, other):
return False
__req__ = __eq__
__rne__ = __ne__
__rle__ = __le__
__rge__ = __ge__
__rlt__ = __lt__
__rgt__ = __gt__
ComparesEqual = ComparesEqualClass()
class UnsetTzClass(object):
""" Sentinel class for unset time zone variable """
pass
UnsetTz = UnsetTzClass()

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from hypothesis import given, assume
from hypothesis import strategies as st
from dateutil import tz
from dateutil.parser import isoparse
import pytest
# Strategies
TIME_ZONE_STRATEGY = st.sampled_from([None, tz.tzutc()] +
[tz.gettz(zname) for zname in ('US/Eastern', 'US/Pacific',
'Australia/Sydney', 'Europe/London')])
ASCII_STRATEGY = st.characters(max_codepoint=127)
@pytest.mark.isoparser
@given(dt=st.datetimes(timezones=TIME_ZONE_STRATEGY), sep=ASCII_STRATEGY)
def test_timespec_auto(dt, sep):
if dt.tzinfo is not None:
# Assume offset has no sub-second components
assume(dt.utcoffset().total_seconds() % 60 == 0)
sep = str(sep) # Python 2.7 requires bytes
dtstr = dt.isoformat(sep=sep)
dt_rt = isoparse(dtstr)
assert dt_rt == dt

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from hypothesis.strategies import integers
from hypothesis import given
import pytest
from dateutil.parser import parserinfo
@pytest.mark.parserinfo
@given(integers(min_value=100, max_value=9999))
def test_convertyear(n):
assert n == parserinfo().convertyear(n)
@pytest.mark.parserinfo
@given(integers(min_value=-50,
max_value=49))
def test_convertyear_no_specified_century(n):
p = parserinfo()
new_year = p._year + n
result = p.convertyear(new_year % 100, century_specified=False)
assert result == new_year

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from dateutil.easter import easter
from dateutil.easter import EASTER_WESTERN, EASTER_ORTHODOX, EASTER_JULIAN
from datetime import date
import unittest
# List of easters between 1990 and 2050
western_easter_dates = [
date(1990, 4, 15), date(1991, 3, 31), date(1992, 4, 19), date(1993, 4, 11),
date(1994, 4, 3), date(1995, 4, 16), date(1996, 4, 7), date(1997, 3, 30),
date(1998, 4, 12), date(1999, 4, 4),
date(2000, 4, 23), date(2001, 4, 15), date(2002, 3, 31), date(2003, 4, 20),
date(2004, 4, 11), date(2005, 3, 27), date(2006, 4, 16), date(2007, 4, 8),
date(2008, 3, 23), date(2009, 4, 12),
date(2010, 4, 4), date(2011, 4, 24), date(2012, 4, 8), date(2013, 3, 31),
date(2014, 4, 20), date(2015, 4, 5), date(2016, 3, 27), date(2017, 4, 16),
date(2018, 4, 1), date(2019, 4, 21),
date(2020, 4, 12), date(2021, 4, 4), date(2022, 4, 17), date(2023, 4, 9),
date(2024, 3, 31), date(2025, 4, 20), date(2026, 4, 5), date(2027, 3, 28),
date(2028, 4, 16), date(2029, 4, 1),
date(2030, 4, 21), date(2031, 4, 13), date(2032, 3, 28), date(2033, 4, 17),
date(2034, 4, 9), date(2035, 3, 25), date(2036, 4, 13), date(2037, 4, 5),
date(2038, 4, 25), date(2039, 4, 10),
date(2040, 4, 1), date(2041, 4, 21), date(2042, 4, 6), date(2043, 3, 29),
date(2044, 4, 17), date(2045, 4, 9), date(2046, 3, 25), date(2047, 4, 14),
date(2048, 4, 5), date(2049, 4, 18), date(2050, 4, 10)
]
orthodox_easter_dates = [
date(1990, 4, 15), date(1991, 4, 7), date(1992, 4, 26), date(1993, 4, 18),
date(1994, 5, 1), date(1995, 4, 23), date(1996, 4, 14), date(1997, 4, 27),
date(1998, 4, 19), date(1999, 4, 11),
date(2000, 4, 30), date(2001, 4, 15), date(2002, 5, 5), date(2003, 4, 27),
date(2004, 4, 11), date(2005, 5, 1), date(2006, 4, 23), date(2007, 4, 8),
date(2008, 4, 27), date(2009, 4, 19),
date(2010, 4, 4), date(2011, 4, 24), date(2012, 4, 15), date(2013, 5, 5),
date(2014, 4, 20), date(2015, 4, 12), date(2016, 5, 1), date(2017, 4, 16),
date(2018, 4, 8), date(2019, 4, 28),
date(2020, 4, 19), date(2021, 5, 2), date(2022, 4, 24), date(2023, 4, 16),
date(2024, 5, 5), date(2025, 4, 20), date(2026, 4, 12), date(2027, 5, 2),
date(2028, 4, 16), date(2029, 4, 8),
date(2030, 4, 28), date(2031, 4, 13), date(2032, 5, 2), date(2033, 4, 24),
date(2034, 4, 9), date(2035, 4, 29), date(2036, 4, 20), date(2037, 4, 5),
date(2038, 4, 25), date(2039, 4, 17),
date(2040, 5, 6), date(2041, 4, 21), date(2042, 4, 13), date(2043, 5, 3),
date(2044, 4, 24), date(2045, 4, 9), date(2046, 4, 29), date(2047, 4, 21),
date(2048, 4, 5), date(2049, 4, 25), date(2050, 4, 17)
]
# A random smattering of Julian dates.
# Pulled values from http://www.kevinlaughery.com/east4099.html
julian_easter_dates = [
date( 326, 4, 3), date( 375, 4, 5), date( 492, 4, 5), date( 552, 3, 31),
date( 562, 4, 9), date( 569, 4, 21), date( 597, 4, 14), date( 621, 4, 19),
date( 636, 3, 31), date( 655, 3, 29), date( 700, 4, 11), date( 725, 4, 8),
date( 750, 3, 29), date( 782, 4, 7), date( 835, 4, 18), date( 849, 4, 14),
date( 867, 3, 30), date( 890, 4, 12), date( 922, 4, 21), date( 934, 4, 6),
date(1049, 3, 26), date(1058, 4, 19), date(1113, 4, 6), date(1119, 3, 30),
date(1242, 4, 20), date(1255, 3, 28), date(1257, 4, 8), date(1258, 3, 24),
date(1261, 4, 24), date(1278, 4, 17), date(1333, 4, 4), date(1351, 4, 17),
date(1371, 4, 6), date(1391, 3, 26), date(1402, 3, 26), date(1412, 4, 3),
date(1439, 4, 5), date(1445, 3, 28), date(1531, 4, 9), date(1555, 4, 14)
]
class EasterTest(unittest.TestCase):
def testEasterWestern(self):
for easter_date in western_easter_dates:
self.assertEqual(easter_date,
easter(easter_date.year, EASTER_WESTERN))
def testEasterOrthodox(self):
for easter_date in orthodox_easter_dates:
self.assertEqual(easter_date,
easter(easter_date.year, EASTER_ORTHODOX))
def testEasterJulian(self):
for easter_date in julian_easter_dates:
self.assertEqual(easter_date,
easter(easter_date.year, EASTER_JULIAN))
def testEasterBadMethod(self):
# Invalid methods raise ValueError
with self.assertRaises(ValueError):
easter(1975, 4)

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"""Test for the "import *" functionality.
As imort * can be only done at module level, it has been added in a separate file
"""
import unittest
prev_locals = list(locals())
from dateutil import *
new_locals = {name:value for name,value in locals().items()
if name not in prev_locals}
new_locals.pop('prev_locals')
class ImportStarTest(unittest.TestCase):
""" Test that `from dateutil import *` adds the modules in __all__ locally"""
def testImportedModules(self):
import dateutil.easter
import dateutil.parser
import dateutil.relativedelta
import dateutil.rrule
import dateutil.tz
import dateutil.utils
import dateutil.zoneinfo
self.assertEquals(dateutil.easter, new_locals.pop("easter"))
self.assertEquals(dateutil.parser, new_locals.pop("parser"))
self.assertEquals(dateutil.relativedelta, new_locals.pop("relativedelta"))
self.assertEquals(dateutil.rrule, new_locals.pop("rrule"))
self.assertEquals(dateutil.tz, new_locals.pop("tz"))
self.assertEquals(dateutil.utils, new_locals.pop("utils"))
self.assertEquals(dateutil.zoneinfo, new_locals.pop("zoneinfo"))
self.assertFalse(new_locals)

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import sys
import unittest
class ImportVersionTest(unittest.TestCase):
""" Test that dateutil.__version__ can be imported"""
def testImportVersionStr(self):
from dateutil import __version__
def testImportRoot(self):
import dateutil
self.assertTrue(hasattr(dateutil, '__version__'))
class ImportEasterTest(unittest.TestCase):
""" Test that dateutil.easter-related imports work properly """
def testEasterDirect(self):
import dateutil.easter
def testEasterFrom(self):
from dateutil import easter
def testEasterStar(self):
from dateutil.easter import easter
class ImportParserTest(unittest.TestCase):
""" Test that dateutil.parser-related imports work properly """
def testParserDirect(self):
import dateutil.parser
def testParserFrom(self):
from dateutil import parser
def testParserAll(self):
# All interface
from dateutil.parser import parse
from dateutil.parser import parserinfo
# Other public classes
from dateutil.parser import parser
for var in (parse, parserinfo, parser):
self.assertIsNot(var, None)
class ImportRelativeDeltaTest(unittest.TestCase):
""" Test that dateutil.relativedelta-related imports work properly """
def testRelativeDeltaDirect(self):
import dateutil.relativedelta
def testRelativeDeltaFrom(self):
from dateutil import relativedelta
def testRelativeDeltaAll(self):
from dateutil.relativedelta import relativedelta
from dateutil.relativedelta import MO, TU, WE, TH, FR, SA, SU
for var in (relativedelta, MO, TU, WE, TH, FR, SA, SU):
self.assertIsNot(var, None)
# In the public interface but not in all
from dateutil.relativedelta import weekday
self.assertIsNot(weekday, None)
class ImportRRuleTest(unittest.TestCase):
""" Test that dateutil.rrule related imports work properly """
def testRRuleDirect(self):
import dateutil.rrule
def testRRuleFrom(self):
from dateutil import rrule
def testRRuleAll(self):
from dateutil.rrule import rrule
from dateutil.rrule import rruleset
from dateutil.rrule import rrulestr
from dateutil.rrule import YEARLY, MONTHLY, WEEKLY, DAILY
from dateutil.rrule import HOURLY, MINUTELY, SECONDLY
from dateutil.rrule import MO, TU, WE, TH, FR, SA, SU
rr_all = (rrule, rruleset, rrulestr,
YEARLY, MONTHLY, WEEKLY, DAILY,
HOURLY, MINUTELY, SECONDLY,
MO, TU, WE, TH, FR, SA, SU)
for var in rr_all:
self.assertIsNot(var, None)
# In the public interface but not in all
from dateutil.rrule import weekday
self.assertIsNot(weekday, None)
class ImportTZTest(unittest.TestCase):
""" Test that dateutil.tz related imports work properly """
def testTzDirect(self):
import dateutil.tz
def testTzFrom(self):
from dateutil import tz
def testTzAll(self):
from dateutil.tz import tzutc
from dateutil.tz import tzoffset
from dateutil.tz import tzlocal
from dateutil.tz import tzfile
from dateutil.tz import tzrange
from dateutil.tz import tzstr
from dateutil.tz import tzical
from dateutil.tz import gettz
from dateutil.tz import tzwin
from dateutil.tz import tzwinlocal
from dateutil.tz import UTC
from dateutil.tz import datetime_ambiguous
from dateutil.tz import datetime_exists
from dateutil.tz import resolve_imaginary
tz_all = ["tzutc", "tzoffset", "tzlocal", "tzfile", "tzrange",
"tzstr", "tzical", "gettz", "datetime_ambiguous",
"datetime_exists", "resolve_imaginary", "UTC"]
tz_all += ["tzwin", "tzwinlocal"] if sys.platform.startswith("win") else []
lvars = locals()
for var in tz_all:
self.assertIsNot(lvars[var], None)
@unittest.skipUnless(sys.platform.startswith('win'), "Requires Windows")
class ImportTZWinTest(unittest.TestCase):
""" Test that dateutil.tzwin related imports work properly """
def testTzwinDirect(self):
import dateutil.tzwin
def testTzwinFrom(self):
from dateutil import tzwin
def testTzwinStar(self):
from dateutil.tzwin import tzwin
from dateutil.tzwin import tzwinlocal
tzwin_all = [tzwin, tzwinlocal]
for var in tzwin_all:
self.assertIsNot(var, None)
class ImportZoneInfoTest(unittest.TestCase):
def testZoneinfoDirect(self):
import dateutil.zoneinfo
def testZoneinfoFrom(self):
from dateutil import zoneinfo
def testZoneinfoStar(self):
from dateutil.zoneinfo import gettz
from dateutil.zoneinfo import gettz_db_metadata
from dateutil.zoneinfo import rebuild
zi_all = (gettz, gettz_db_metadata, rebuild)
for var in zi_all:
self.assertIsNot(var, None)

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# -*- coding: utf-8 -*-
"""
Tests for implementation details, not necessarily part of the user-facing
API.
The motivating case for these tests is #483, where we want to smoke-test
code that may be difficult to reach through the standard API calls.
"""
import unittest
import sys
import pytest
from dateutil.parser._parser import _ymd
from dateutil import tz
IS_PY32 = sys.version_info[0:2] == (3, 2)
class TestYMD(unittest.TestCase):
# @pytest.mark.smoke
def test_could_be_day(self):
ymd = _ymd('foo bar 124 baz')
ymd.append(2, 'M')
assert ymd.has_month
assert not ymd.has_year
assert ymd.could_be_day(4)
assert not ymd.could_be_day(-6)
assert not ymd.could_be_day(32)
# Assumes leapyear
assert ymd.could_be_day(29)
ymd.append(1999)
assert ymd.has_year
assert not ymd.could_be_day(29)
ymd.append(16, 'D')
assert ymd.has_day
assert not ymd.could_be_day(1)
ymd = _ymd('foo bar 124 baz')
ymd.append(1999)
assert ymd.could_be_day(31)
###
# Test that private interfaces in _parser are deprecated properly
@pytest.mark.skipif(IS_PY32, reason='pytest.warns not supported on Python 3.2')
def test_parser_private_warns():
from dateutil.parser import _timelex, _tzparser
from dateutil.parser import _parsetz
with pytest.warns(DeprecationWarning):
_tzparser()
with pytest.warns(DeprecationWarning):
_timelex('2014-03-03')
with pytest.warns(DeprecationWarning):
_parsetz('+05:00')
@pytest.mark.skipif(IS_PY32, reason='pytest.warns not supported on Python 3.2')
def test_parser_parser_private_not_warns():
from dateutil.parser._parser import _timelex, _tzparser
from dateutil.parser._parser import _parsetz
with pytest.warns(None) as recorder:
_tzparser()
assert len(recorder) == 0
with pytest.warns(None) as recorder:
_timelex('2014-03-03')
assert len(recorder) == 0
with pytest.warns(None) as recorder:
_parsetz('+05:00')
assert len(recorder) == 0
@pytest.mark.tzstr
def test_tzstr_internal_timedeltas():
with pytest.warns(tz.DeprecatedTzFormatWarning):
tz1 = tz.tzstr("EST5EDT,5,4,0,7200,11,-3,0,7200")
with pytest.warns(tz.DeprecatedTzFormatWarning):
tz2 = tz.tzstr("EST5EDT,4,1,0,7200,10,-1,0,7200")
assert tz1._start_delta != tz2._start_delta
assert tz1._end_delta != tz2._end_delta

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# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from datetime import datetime, timedelta, date, time
import itertools as it
from dateutil.tz import tz
from dateutil.parser import isoparser, isoparse
import pytest
import six
UTC = tz.tzutc()
def _generate_tzoffsets(limited):
def _mkoffset(hmtuple, fmt):
h, m = hmtuple
m_td = (-1 if h < 0 else 1) * m
tzo = tz.tzoffset(None, timedelta(hours=h, minutes=m_td))
return tzo, fmt.format(h, m)
out = []
if not limited:
# The subset that's just hours
hm_out_h = [(h, 0) for h in (-23, -5, 0, 5, 23)]
out.extend([_mkoffset(hm, '{:+03d}') for hm in hm_out_h])
# Ones that have hours and minutes
hm_out = [] + hm_out_h
hm_out += [(-12, 15), (11, 30), (10, 2), (5, 15), (-5, 30)]
else:
hm_out = [(-5, -0)]
fmts = ['{:+03d}:{:02d}', '{:+03d}{:02d}']
out += [_mkoffset(hm, fmt) for hm in hm_out for fmt in fmts]
# Also add in UTC and naive
out.append((tz.tzutc(), 'Z'))
out.append((None, ''))
return out
FULL_TZOFFSETS = _generate_tzoffsets(False)
FULL_TZOFFSETS_AWARE = [x for x in FULL_TZOFFSETS if x[1]]
TZOFFSETS = _generate_tzoffsets(True)
DATES = [datetime(1996, 1, 1), datetime(2017, 1, 1)]
@pytest.mark.parametrize('dt', tuple(DATES))
def test_year_only(dt):
dtstr = dt.strftime('%Y')
assert isoparse(dtstr) == dt
DATES += [datetime(2000, 2, 1), datetime(2017, 4, 1)]
@pytest.mark.parametrize('dt', tuple(DATES))
def test_year_month(dt):
fmt = '%Y-%m'
dtstr = dt.strftime(fmt)
assert isoparse(dtstr) == dt
DATES += [datetime(2016, 2, 29), datetime(2018, 3, 15)]
YMD_FMTS = ('%Y%m%d', '%Y-%m-%d')
@pytest.mark.parametrize('dt', tuple(DATES))
@pytest.mark.parametrize('fmt', YMD_FMTS)
def test_year_month_day(dt, fmt):
dtstr = dt.strftime(fmt)
assert isoparse(dtstr) == dt
def _isoparse_date_and_time(dt, date_fmt, time_fmt, tzoffset,
microsecond_precision=None):
tzi, offset_str = tzoffset
fmt = date_fmt + 'T' + time_fmt
dt = dt.replace(tzinfo=tzi)
dtstr = dt.strftime(fmt)
if microsecond_precision is not None:
if not fmt.endswith('%f'):
raise ValueError('Time format has no microseconds!')
if microsecond_precision != 6:
dtstr = dtstr[:-(6 - microsecond_precision)]
elif microsecond_precision > 6:
raise ValueError('Precision must be 1-6')
dtstr += offset_str
assert isoparse(dtstr) == dt
DATETIMES = [datetime(1998, 4, 16, 12),
datetime(2019, 11, 18, 23),
datetime(2014, 12, 16, 4)]
@pytest.mark.parametrize('dt', tuple(DATETIMES))
@pytest.mark.parametrize('date_fmt', YMD_FMTS)
@pytest.mark.parametrize('tzoffset', TZOFFSETS)
def test_ymd_h(dt, date_fmt, tzoffset):
_isoparse_date_and_time(dt, date_fmt, '%H', tzoffset)
DATETIMES = [datetime(2012, 1, 6, 9, 37)]
@pytest.mark.parametrize('dt', tuple(DATETIMES))
@pytest.mark.parametrize('date_fmt', YMD_FMTS)
@pytest.mark.parametrize('time_fmt', ('%H%M', '%H:%M'))
@pytest.mark.parametrize('tzoffset', TZOFFSETS)
def test_ymd_hm(dt, date_fmt, time_fmt, tzoffset):
_isoparse_date_and_time(dt, date_fmt, time_fmt, tzoffset)
DATETIMES = [datetime(2003, 9, 2, 22, 14, 2),
datetime(2003, 8, 8, 14, 9, 14),
datetime(2003, 4, 7, 6, 14, 59)]
HMS_FMTS = ('%H%M%S', '%H:%M:%S')
@pytest.mark.parametrize('dt', tuple(DATETIMES))
@pytest.mark.parametrize('date_fmt', YMD_FMTS)
@pytest.mark.parametrize('time_fmt', HMS_FMTS)
@pytest.mark.parametrize('tzoffset', TZOFFSETS)
def test_ymd_hms(dt, date_fmt, time_fmt, tzoffset):
_isoparse_date_and_time(dt, date_fmt, time_fmt, tzoffset)
DATETIMES = [datetime(2017, 11, 27, 6, 14, 30, 123456)]
@pytest.mark.parametrize('dt', tuple(DATETIMES))
@pytest.mark.parametrize('date_fmt', YMD_FMTS)
@pytest.mark.parametrize('time_fmt', (x + '.%f' for x in HMS_FMTS))
@pytest.mark.parametrize('tzoffset', TZOFFSETS)
@pytest.mark.parametrize('precision', list(range(3, 7)))
def test_ymd_hms_micro(dt, date_fmt, time_fmt, tzoffset, precision):
# Truncate the microseconds to the desired precision for the representation
dt = dt.replace(microsecond=int(round(dt.microsecond, precision-6)))
_isoparse_date_and_time(dt, date_fmt, time_fmt, tzoffset, precision)
@pytest.mark.parametrize('tzoffset', FULL_TZOFFSETS)
def test_full_tzoffsets(tzoffset):
dt = datetime(2017, 11, 27, 6, 14, 30, 123456)
date_fmt = '%Y-%m-%d'
time_fmt = '%H:%M:%S.%f'
_isoparse_date_and_time(dt, date_fmt, time_fmt, tzoffset)
@pytest.mark.parametrize('dt_str', [
'2014-04-11T00',
'2014-04-11T24',
'2014-04-11T00:00',
'2014-04-11T24:00',
'2014-04-11T00:00:00',
'2014-04-11T24:00:00',
'2014-04-11T00:00:00.000',
'2014-04-11T24:00:00.000',
'2014-04-11T00:00:00.000000',
'2014-04-11T24:00:00.000000']
)
def test_datetime_midnight(dt_str):
assert isoparse(dt_str) == datetime(2014, 4, 11, 0, 0, 0, 0)
@pytest.mark.parametrize('datestr', [
'2014-01-01',
'20140101',
])
@pytest.mark.parametrize('sep', [' ', 'a', 'T', '_', '-'])
def test_isoparse_sep_none(datestr, sep):
isostr = datestr + sep + '14:33:09'
assert isoparse(isostr) == datetime(2014, 1, 1, 14, 33, 9)
##
# Uncommon date formats
TIME_ARGS = ('time_args',
((None, time(0), None), ) + tuple(('%H:%M:%S.%f', _t, _tz)
for _t, _tz in it.product([time(0), time(9, 30), time(14, 47)],
TZOFFSETS)))
@pytest.mark.parametrize('isocal,dt_expected',[
((2017, 10), datetime(2017, 3, 6)),
((2020, 1), datetime(2019, 12, 30)), # ISO year != Cal year
((2004, 53), datetime(2004, 12, 27)), # Only half the week is in 2014
])
def test_isoweek(isocal, dt_expected):
# TODO: Figure out how to parametrize this on formats, too
for fmt in ('{:04d}-W{:02d}', '{:04d}W{:02d}'):
dtstr = fmt.format(*isocal)
assert isoparse(dtstr) == dt_expected
@pytest.mark.parametrize('isocal,dt_expected',[
((2016, 13, 7), datetime(2016, 4, 3)),
((2004, 53, 7), datetime(2005, 1, 2)), # ISO year != Cal year
((2009, 1, 2), datetime(2008, 12, 30)), # ISO year < Cal year
((2009, 53, 6), datetime(2010, 1, 2)) # ISO year > Cal year
])
def test_isoweek_day(isocal, dt_expected):
# TODO: Figure out how to parametrize this on formats, too
for fmt in ('{:04d}-W{:02d}-{:d}', '{:04d}W{:02d}{:d}'):
dtstr = fmt.format(*isocal)
assert isoparse(dtstr) == dt_expected
@pytest.mark.parametrize('isoord,dt_expected', [
((2004, 1), datetime(2004, 1, 1)),
((2016, 60), datetime(2016, 2, 29)),
((2017, 60), datetime(2017, 3, 1)),
((2016, 366), datetime(2016, 12, 31)),
((2017, 365), datetime(2017, 12, 31))
])
def test_iso_ordinal(isoord, dt_expected):
for fmt in ('{:04d}-{:03d}', '{:04d}{:03d}'):
dtstr = fmt.format(*isoord)
assert isoparse(dtstr) == dt_expected
###
# Acceptance of bytes
@pytest.mark.parametrize('isostr,dt', [
(b'2014', datetime(2014, 1, 1)),
(b'20140204', datetime(2014, 2, 4)),
(b'2014-02-04', datetime(2014, 2, 4)),
(b'2014-02-04T12', datetime(2014, 2, 4, 12)),
(b'2014-02-04T12:30', datetime(2014, 2, 4, 12, 30)),
(b'2014-02-04T12:30:15', datetime(2014, 2, 4, 12, 30, 15)),
(b'2014-02-04T12:30:15.224', datetime(2014, 2, 4, 12, 30, 15, 224000)),
(b'20140204T123015.224', datetime(2014, 2, 4, 12, 30, 15, 224000)),
(b'2014-02-04T12:30:15.224Z', datetime(2014, 2, 4, 12, 30, 15, 224000,
tz.tzutc())),
(b'2014-02-04T12:30:15.224+05:00',
datetime(2014, 2, 4, 12, 30, 15, 224000,
tzinfo=tz.tzoffset(None, timedelta(hours=5))))])
def test_bytes(isostr, dt):
assert isoparse(isostr) == dt
###
# Invalid ISO strings
@pytest.mark.parametrize('isostr,exception', [
('201', ValueError), # ISO string too short
('2012-0425', ValueError), # Inconsistent date separators
('201204-25', ValueError), # Inconsistent date separators
('20120425T0120:00', ValueError), # Inconsistent time separators
('20120425T012500-334', ValueError), # Wrong microsecond separator
('2001-1', ValueError), # YYYY-M not valid
('2012-04-9', ValueError), # YYYY-MM-D not valid
('201204', ValueError), # YYYYMM not valid
('20120411T03:30+', ValueError), # Time zone too short
('20120411T03:30+1234567', ValueError), # Time zone too long
('20120411T03:30-25:40', ValueError), # Time zone invalid
('2012-1a', ValueError), # Invalid month
('20120411T03:30+00:60', ValueError), # Time zone invalid minutes
('20120411T03:30+00:61', ValueError), # Time zone invalid minutes
('20120411T033030.123456012:00', # No sign in time zone
ValueError),
('2012-W00', ValueError), # Invalid ISO week
('2012-W55', ValueError), # Invalid ISO week
('2012-W01-0', ValueError), # Invalid ISO week day
('2012-W01-8', ValueError), # Invalid ISO week day
('2013-000', ValueError), # Invalid ordinal day
('2013-366', ValueError), # Invalid ordinal day
('2013366', ValueError), # Invalid ordinal day
('2014-03-12Т12:30:14', ValueError), # Cyrillic T
('2014-04-21T24:00:01', ValueError), # Invalid use of 24 for midnight
('2014_W01-1', ValueError), # Invalid separator
('2014W01-1', ValueError), # Inconsistent use of dashes
('2014-W011', ValueError), # Inconsistent use of dashes
])
def test_iso_raises(isostr, exception):
with pytest.raises(exception):
isoparse(isostr)
@pytest.mark.parametrize('sep_act,valid_sep', [
('C', 'T'),
('T', 'C')
])
def test_iso_raises_sep(sep_act, valid_sep):
isostr = '2012-04-25' + sep_act + '01:25:00'
@pytest.mark.xfail()
@pytest.mark.parametrize('isostr,exception', [
('20120425T01:2000', ValueError), # Inconsistent time separators
])
def test_iso_raises_failing(isostr, exception):
# These are test cases where the current implementation is too lenient
# and need to be fixed
with pytest.raises(exception):
isoparse(isostr)
###
# Test ISOParser constructor
@pytest.mark.parametrize('sep', [' ', '9', '🍛'])
def test_isoparser_invalid_sep(sep):
with pytest.raises(ValueError):
isoparser(sep=sep)
# This only fails on Python 3
@pytest.mark.xfail(six.PY3, reason="Fails on Python 3 only")
def test_isoparser_byte_sep():
dt = datetime(2017, 12, 6, 12, 30, 45)
dt_str = dt.isoformat(sep=str('T'))
dt_rt = isoparser(sep=b'T').isoparse(dt_str)
assert dt == dt_rt
###
# Test parse_tzstr
@pytest.mark.parametrize('tzoffset', FULL_TZOFFSETS)
def test_parse_tzstr(tzoffset):
dt = datetime(2017, 11, 27, 6, 14, 30, 123456)
date_fmt = '%Y-%m-%d'
time_fmt = '%H:%M:%S.%f'
_isoparse_date_and_time(dt, date_fmt, time_fmt, tzoffset)
@pytest.mark.parametrize('tzstr', [
'-00:00', '+00:00', '+00', '-00', '+0000', '-0000'
])
@pytest.mark.parametrize('zero_as_utc', [True, False])
def test_parse_tzstr_zero_as_utc(tzstr, zero_as_utc):
tzi = isoparser().parse_tzstr(tzstr, zero_as_utc=zero_as_utc)
assert tzi == tz.tzutc()
assert (type(tzi) == tz.tzutc) == zero_as_utc
@pytest.mark.parametrize('tzstr,exception', [
('00:00', ValueError), # No sign
('05:00', ValueError), # No sign
('_00:00', ValueError), # Invalid sign
('+25:00', ValueError), # Offset too large
('00:0000', ValueError), # String too long
])
def test_parse_tzstr_fails(tzstr, exception):
with pytest.raises(exception):
isoparser().parse_tzstr(tzstr)
###
# Test parse_isodate
def __make_date_examples():
dates_no_day = [
date(1999, 12, 1),
date(2016, 2, 1)
]
if six.PY3:
# strftime does not support dates before 1900 in Python 2
dates_no_day.append(date(1000, 11, 1))
# Only one supported format for dates with no day
o = zip(dates_no_day, it.repeat('%Y-%m'))
dates_w_day = [
date(1969, 12, 31),
date(1900, 1, 1),
date(2016, 2, 29),
date(2017, 11, 14)
]
dates_w_day_fmts = ('%Y%m%d', '%Y-%m-%d')
o = it.chain(o, it.product(dates_w_day, dates_w_day_fmts))
return list(o)
@pytest.mark.parametrize('d,dt_fmt', __make_date_examples())
@pytest.mark.parametrize('as_bytes', [True, False])
def test_parse_isodate(d, dt_fmt, as_bytes):
d_str = d.strftime(dt_fmt)
if isinstance(d_str, six.text_type) and as_bytes:
d_str = d_str.encode('ascii')
elif isinstance(d_str, six.binary_type) and not as_bytes:
d_str = d_str.decode('ascii')
iparser = isoparser()
assert iparser.parse_isodate(d_str) == d
@pytest.mark.parametrize('isostr,exception', [
('243', ValueError), # ISO string too short
('2014-0423', ValueError), # Inconsistent date separators
('201404-23', ValueError), # Inconsistent date separators
('2014日03月14', ValueError), # Not ASCII
('2013-02-29', ValueError), # Not a leap year
('2014/12/03', ValueError), # Wrong separators
('2014-04-19T', ValueError), # Unknown components
])
def test_isodate_raises(isostr, exception):
with pytest.raises(exception):
isoparser().parse_isodate(isostr)
###
# Test parse_isotime
def __make_time_examples():
outputs = []
# HH
time_h = [time(0), time(8), time(22)]
time_h_fmts = ['%H']
outputs.append(it.product(time_h, time_h_fmts))
# HHMM / HH:MM
time_hm = [time(0, 0), time(0, 30), time(8, 47), time(16, 1)]
time_hm_fmts = ['%H%M', '%H:%M']
outputs.append(it.product(time_hm, time_hm_fmts))
# HHMMSS / HH:MM:SS
time_hms = [time(0, 0, 0), time(0, 15, 30),
time(8, 2, 16), time(12, 0), time(16, 2), time(20, 45)]
time_hms_fmts = ['%H%M%S', '%H:%M:%S']
outputs.append(it.product(time_hms, time_hms_fmts))
# HHMMSS.ffffff / HH:MM:SS.ffffff
time_hmsu = [time(0, 0, 0, 0), time(4, 15, 3, 247993),
time(14, 21, 59, 948730),
time(23, 59, 59, 999999)]
time_hmsu_fmts = ['%H%M%S.%f', '%H:%M:%S.%f']
outputs.append(it.product(time_hmsu, time_hmsu_fmts))
outputs = list(map(list, outputs))
# Time zones
ex_naive = list(it.chain.from_iterable(x[0:2] for x in outputs))
o = it.product(ex_naive, TZOFFSETS) # ((time, fmt), (tzinfo, offsetstr))
o = ((t.replace(tzinfo=tzi), fmt + off_str)
for (t, fmt), (tzi, off_str) in o)
outputs.append(o)
return list(it.chain.from_iterable(outputs))
@pytest.mark.parametrize('time_val,time_fmt', __make_time_examples())
@pytest.mark.parametrize('as_bytes', [True, False])
def test_isotime(time_val, time_fmt, as_bytes):
tstr = time_val.strftime(time_fmt)
if isinstance(time_val, six.text_type) and as_bytes:
tstr = tstr.encode('ascii')
elif isinstance(time_val, six.binary_type) and not as_bytes:
tstr = tstr.decode('ascii')
iparser = isoparser()
assert iparser.parse_isotime(tstr) == time_val
@pytest.mark.parametrize('isostr,exception', [
('3', ValueError), # ISO string too short
('14時30分15秒', ValueError), # Not ASCII
('14_30_15', ValueError), # Invalid separators
('1430:15', ValueError), # Inconsistent separator use
('14:30:15.3684000309', ValueError), # Too much us precision
('25', ValueError), # Invalid hours
('25:15', ValueError), # Invalid hours
('14:60', ValueError), # Invalid minutes
('14:59:61', ValueError), # Invalid seconds
('14:30:15.3446830500', ValueError), # No sign in time zone
('14:30:15+', ValueError), # Time zone too short
('14:30:15+1234567', ValueError), # Time zone invalid
('14:59:59+25:00', ValueError), # Invalid tz hours
('14:59:59+12:62', ValueError), # Invalid tz minutes
('14:59:30_344583', ValueError), # Invalid microsecond separator
])
def test_isotime_raises(isostr, exception):
iparser = isoparser()
with pytest.raises(exception):
iparser.parse_isotime(isostr)
@pytest.mark.xfail()
@pytest.mark.parametrize('isostr,exception', [
('14:3015', ValueError), # Inconsistent separator use
('201202', ValueError) # Invalid ISO format
])
def test_isotime_raises_xfail(isostr, exception):
iparser = isoparser()
with pytest.raises(exception):
iparser.parse_isotime(isostr)

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# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from ._common import WarningTestMixin, NotAValue
import calendar
from datetime import datetime, date, timedelta
import unittest
from dateutil.relativedelta import relativedelta, MO, TU, WE, FR, SU
class RelativeDeltaTest(WarningTestMixin, unittest.TestCase):
now = datetime(2003, 9, 17, 20, 54, 47, 282310)
today = date(2003, 9, 17)
def testInheritance(self):
# Ensure that relativedelta is inheritance-friendly.
class rdChildClass(relativedelta):
pass
ccRD = rdChildClass(years=1, months=1, days=1, leapdays=1, weeks=1,
hours=1, minutes=1, seconds=1, microseconds=1)
rd = relativedelta(years=1, months=1, days=1, leapdays=1, weeks=1,
hours=1, minutes=1, seconds=1, microseconds=1)
self.assertEqual(type(ccRD + rd), type(ccRD),
msg='Addition does not inherit type.')
self.assertEqual(type(ccRD - rd), type(ccRD),
msg='Subtraction does not inherit type.')
self.assertEqual(type(-ccRD), type(ccRD),
msg='Negation does not inherit type.')
self.assertEqual(type(ccRD * 5.0), type(ccRD),
msg='Multiplication does not inherit type.')
self.assertEqual(type(ccRD / 5.0), type(ccRD),
msg='Division does not inherit type.')
def testMonthEndMonthBeginning(self):
self.assertEqual(relativedelta(datetime(2003, 1, 31, 23, 59, 59),
datetime(2003, 3, 1, 0, 0, 0)),
relativedelta(months=-1, seconds=-1))
self.assertEqual(relativedelta(datetime(2003, 3, 1, 0, 0, 0),
datetime(2003, 1, 31, 23, 59, 59)),
relativedelta(months=1, seconds=1))
def testMonthEndMonthBeginningLeapYear(self):
self.assertEqual(relativedelta(datetime(2012, 1, 31, 23, 59, 59),
datetime(2012, 3, 1, 0, 0, 0)),
relativedelta(months=-1, seconds=-1))
self.assertEqual(relativedelta(datetime(2003, 3, 1, 0, 0, 0),
datetime(2003, 1, 31, 23, 59, 59)),
relativedelta(months=1, seconds=1))
def testNextMonth(self):
self.assertEqual(self.now+relativedelta(months=+1),
datetime(2003, 10, 17, 20, 54, 47, 282310))
def testNextMonthPlusOneWeek(self):
self.assertEqual(self.now+relativedelta(months=+1, weeks=+1),
datetime(2003, 10, 24, 20, 54, 47, 282310))
def testNextMonthPlusOneWeek10am(self):
self.assertEqual(self.today +
relativedelta(months=+1, weeks=+1, hour=10),
datetime(2003, 10, 24, 10, 0))
def testNextMonthPlusOneWeek10amDiff(self):
self.assertEqual(relativedelta(datetime(2003, 10, 24, 10, 0),
self.today),
relativedelta(months=+1, days=+7, hours=+10))
def testOneMonthBeforeOneYear(self):
self.assertEqual(self.now+relativedelta(years=+1, months=-1),
datetime(2004, 8, 17, 20, 54, 47, 282310))
def testMonthsOfDiffNumOfDays(self):
self.assertEqual(date(2003, 1, 27)+relativedelta(months=+1),
date(2003, 2, 27))
self.assertEqual(date(2003, 1, 31)+relativedelta(months=+1),
date(2003, 2, 28))
self.assertEqual(date(2003, 1, 31)+relativedelta(months=+2),
date(2003, 3, 31))
def testMonthsOfDiffNumOfDaysWithYears(self):
self.assertEqual(date(2000, 2, 28)+relativedelta(years=+1),
date(2001, 2, 28))
self.assertEqual(date(2000, 2, 29)+relativedelta(years=+1),
date(2001, 2, 28))
self.assertEqual(date(1999, 2, 28)+relativedelta(years=+1),
date(2000, 2, 28))
self.assertEqual(date(1999, 3, 1)+relativedelta(years=+1),
date(2000, 3, 1))
self.assertEqual(date(1999, 3, 1)+relativedelta(years=+1),
date(2000, 3, 1))
self.assertEqual(date(2001, 2, 28)+relativedelta(years=-1),
date(2000, 2, 28))
self.assertEqual(date(2001, 3, 1)+relativedelta(years=-1),
date(2000, 3, 1))
def testNextFriday(self):
self.assertEqual(self.today+relativedelta(weekday=FR),
date(2003, 9, 19))
def testNextFridayInt(self):
self.assertEqual(self.today+relativedelta(weekday=calendar.FRIDAY),
date(2003, 9, 19))
def testLastFridayInThisMonth(self):
self.assertEqual(self.today+relativedelta(day=31, weekday=FR(-1)),
date(2003, 9, 26))
def testNextWednesdayIsToday(self):
self.assertEqual(self.today+relativedelta(weekday=WE),
date(2003, 9, 17))
def testNextWenesdayNotToday(self):
self.assertEqual(self.today+relativedelta(days=+1, weekday=WE),
date(2003, 9, 24))
def test15thISOYearWeek(self):
self.assertEqual(date(2003, 1, 1) +
relativedelta(day=4, weeks=+14, weekday=MO(-1)),
date(2003, 4, 7))
def testMillenniumAge(self):
self.assertEqual(relativedelta(self.now, date(2001, 1, 1)),
relativedelta(years=+2, months=+8, days=+16,
hours=+20, minutes=+54, seconds=+47,
microseconds=+282310))
def testJohnAge(self):
self.assertEqual(relativedelta(self.now,
datetime(1978, 4, 5, 12, 0)),
relativedelta(years=+25, months=+5, days=+12,
hours=+8, minutes=+54, seconds=+47,
microseconds=+282310))
def testJohnAgeWithDate(self):
self.assertEqual(relativedelta(self.today,
datetime(1978, 4, 5, 12, 0)),
relativedelta(years=+25, months=+5, days=+11,
hours=+12))
def testYearDay(self):
self.assertEqual(date(2003, 1, 1)+relativedelta(yearday=260),
date(2003, 9, 17))
self.assertEqual(date(2002, 1, 1)+relativedelta(yearday=260),
date(2002, 9, 17))
self.assertEqual(date(2000, 1, 1)+relativedelta(yearday=260),
date(2000, 9, 16))
self.assertEqual(self.today+relativedelta(yearday=261),
date(2003, 9, 18))
def testYearDayBug(self):
# Tests a problem reported by Adam Ryan.
self.assertEqual(date(2010, 1, 1)+relativedelta(yearday=15),
date(2010, 1, 15))
def testNonLeapYearDay(self):
self.assertEqual(date(2003, 1, 1)+relativedelta(nlyearday=260),
date(2003, 9, 17))
self.assertEqual(date(2002, 1, 1)+relativedelta(nlyearday=260),
date(2002, 9, 17))
self.assertEqual(date(2000, 1, 1)+relativedelta(nlyearday=260),
date(2000, 9, 17))
self.assertEqual(self.today+relativedelta(yearday=261),
date(2003, 9, 18))
def testAddition(self):
self.assertEqual(relativedelta(days=10) +
relativedelta(years=1, months=2, days=3, hours=4,
minutes=5, microseconds=6),
relativedelta(years=1, months=2, days=13, hours=4,
minutes=5, microseconds=6))
def testAbsoluteAddition(self):
self.assertEqual(relativedelta() + relativedelta(day=0, hour=0),
relativedelta(day=0, hour=0))
self.assertEqual(relativedelta(day=0, hour=0) + relativedelta(),
relativedelta(day=0, hour=0))
def testAdditionToDatetime(self):
self.assertEqual(datetime(2000, 1, 1) + relativedelta(days=1),
datetime(2000, 1, 2))
def testRightAdditionToDatetime(self):
self.assertEqual(relativedelta(days=1) + datetime(2000, 1, 1),
datetime(2000, 1, 2))
def testAdditionInvalidType(self):
with self.assertRaises(TypeError):
relativedelta(days=3) + 9
def testAdditionUnsupportedType(self):
# For unsupported types that define their own comparators, etc.
self.assertIs(relativedelta(days=1) + NotAValue, NotAValue)
def testAdditionFloatValue(self):
self.assertEqual(datetime(2000, 1, 1) + relativedelta(days=float(1)),
datetime(2000, 1, 2))
self.assertEqual(datetime(2000, 1, 1) + relativedelta(months=float(1)),
datetime(2000, 2, 1))
self.assertEqual(datetime(2000, 1, 1) + relativedelta(years=float(1)),
datetime(2001, 1, 1))
def testAdditionFloatFractionals(self):
self.assertEqual(datetime(2000, 1, 1, 0) +
relativedelta(days=float(0.5)),
datetime(2000, 1, 1, 12))
self.assertEqual(datetime(2000, 1, 1, 0, 0) +
relativedelta(hours=float(0.5)),
datetime(2000, 1, 1, 0, 30))
self.assertEqual(datetime(2000, 1, 1, 0, 0, 0) +
relativedelta(minutes=float(0.5)),
datetime(2000, 1, 1, 0, 0, 30))
self.assertEqual(datetime(2000, 1, 1, 0, 0, 0, 0) +
relativedelta(seconds=float(0.5)),
datetime(2000, 1, 1, 0, 0, 0, 500000))
self.assertEqual(datetime(2000, 1, 1, 0, 0, 0, 0) +
relativedelta(microseconds=float(500000.25)),
datetime(2000, 1, 1, 0, 0, 0, 500000))
def testSubtraction(self):
self.assertEqual(relativedelta(days=10) -
relativedelta(years=1, months=2, days=3, hours=4,
minutes=5, microseconds=6),
relativedelta(years=-1, months=-2, days=7, hours=-4,
minutes=-5, microseconds=-6))
def testRightSubtractionFromDatetime(self):
self.assertEqual(datetime(2000, 1, 2) - relativedelta(days=1),
datetime(2000, 1, 1))
def testSubractionWithDatetime(self):
self.assertRaises(TypeError, lambda x, y: x - y,
(relativedelta(days=1), datetime(2000, 1, 1)))
def testSubtractionInvalidType(self):
with self.assertRaises(TypeError):
relativedelta(hours=12) - 14
def testSubtractionUnsupportedType(self):
self.assertIs(relativedelta(days=1) + NotAValue, NotAValue)
def testMultiplication(self):
self.assertEqual(datetime(2000, 1, 1) + relativedelta(days=1) * 28,
datetime(2000, 1, 29))
self.assertEqual(datetime(2000, 1, 1) + 28 * relativedelta(days=1),
datetime(2000, 1, 29))
def testMultiplicationUnsupportedType(self):
self.assertIs(relativedelta(days=1) * NotAValue, NotAValue)
def testDivision(self):
self.assertEqual(datetime(2000, 1, 1) + relativedelta(days=28) / 28,
datetime(2000, 1, 2))
def testDivisionUnsupportedType(self):
self.assertIs(relativedelta(days=1) / NotAValue, NotAValue)
def testBoolean(self):
self.assertFalse(relativedelta(days=0))
self.assertTrue(relativedelta(days=1))
def testAbsoluteValueNegative(self):
rd_base = relativedelta(years=-1, months=-5, days=-2, hours=-3,
minutes=-5, seconds=-2, microseconds=-12)
rd_expected = relativedelta(years=1, months=5, days=2, hours=3,
minutes=5, seconds=2, microseconds=12)
self.assertEqual(abs(rd_base), rd_expected)
def testAbsoluteValuePositive(self):
rd_base = relativedelta(years=1, months=5, days=2, hours=3,
minutes=5, seconds=2, microseconds=12)
rd_expected = rd_base
self.assertEqual(abs(rd_base), rd_expected)
def testComparison(self):
d1 = relativedelta(years=1, months=1, days=1, leapdays=0, hours=1,
minutes=1, seconds=1, microseconds=1)
d2 = relativedelta(years=1, months=1, days=1, leapdays=0, hours=1,
minutes=1, seconds=1, microseconds=1)
d3 = relativedelta(years=1, months=1, days=1, leapdays=0, hours=1,
minutes=1, seconds=1, microseconds=2)
self.assertEqual(d1, d2)
self.assertNotEqual(d1, d3)
def testInequalityTypeMismatch(self):
# Different type
self.assertFalse(relativedelta(year=1) == 19)
def testInequalityUnsupportedType(self):
self.assertIs(relativedelta(hours=3) == NotAValue, NotAValue)
def testInequalityWeekdays(self):
# Different weekdays
no_wday = relativedelta(year=1997, month=4)
wday_mo_1 = relativedelta(year=1997, month=4, weekday=MO(+1))
wday_mo_2 = relativedelta(year=1997, month=4, weekday=MO(+2))
wday_tu = relativedelta(year=1997, month=4, weekday=TU)
self.assertTrue(wday_mo_1 == wday_mo_1)
self.assertFalse(no_wday == wday_mo_1)
self.assertFalse(wday_mo_1 == no_wday)
self.assertFalse(wday_mo_1 == wday_mo_2)
self.assertFalse(wday_mo_2 == wday_mo_1)
self.assertFalse(wday_mo_1 == wday_tu)
self.assertFalse(wday_tu == wday_mo_1)
def testMonthOverflow(self):
self.assertEqual(relativedelta(months=273),
relativedelta(years=22, months=9))
def testWeeks(self):
# Test that the weeks property is working properly.
rd = relativedelta(years=4, months=2, weeks=8, days=6)
self.assertEqual((rd.weeks, rd.days), (8, 8 * 7 + 6))
rd.weeks = 3
self.assertEqual((rd.weeks, rd.days), (3, 3 * 7 + 6))
def testRelativeDeltaRepr(self):
self.assertEqual(repr(relativedelta(years=1, months=-1, days=15)),
'relativedelta(years=+1, months=-1, days=+15)')
self.assertEqual(repr(relativedelta(months=14, seconds=-25)),
'relativedelta(years=+1, months=+2, seconds=-25)')
self.assertEqual(repr(relativedelta(month=3, hour=3, weekday=SU(3))),
'relativedelta(month=3, weekday=SU(+3), hour=3)')
def testRelativeDeltaFractionalYear(self):
with self.assertRaises(ValueError):
relativedelta(years=1.5)
def testRelativeDeltaFractionalMonth(self):
with self.assertRaises(ValueError):
relativedelta(months=1.5)
def testRelativeDeltaFractionalAbsolutes(self):
# Fractional absolute values will soon be unsupported,
# check for the deprecation warning.
with self.assertWarns(DeprecationWarning):
relativedelta(year=2.86)
with self.assertWarns(DeprecationWarning):
relativedelta(month=1.29)
with self.assertWarns(DeprecationWarning):
relativedelta(day=0.44)
with self.assertWarns(DeprecationWarning):
relativedelta(hour=23.98)
with self.assertWarns(DeprecationWarning):
relativedelta(minute=45.21)
with self.assertWarns(DeprecationWarning):
relativedelta(second=13.2)
with self.assertWarns(DeprecationWarning):
relativedelta(microsecond=157221.93)
def testRelativeDeltaFractionalRepr(self):
rd = relativedelta(years=3, months=-2, days=1.25)
self.assertEqual(repr(rd),
'relativedelta(years=+3, months=-2, days=+1.25)')
rd = relativedelta(hours=0.5, seconds=9.22)
self.assertEqual(repr(rd),
'relativedelta(hours=+0.5, seconds=+9.22)')
def testRelativeDeltaFractionalWeeks(self):
# Equivalent to days=8, hours=18
rd = relativedelta(weeks=1.25)
d1 = datetime(2009, 9, 3, 0, 0)
self.assertEqual(d1 + rd,
datetime(2009, 9, 11, 18))
def testRelativeDeltaFractionalDays(self):
rd1 = relativedelta(days=1.48)
d1 = datetime(2009, 9, 3, 0, 0)
self.assertEqual(d1 + rd1,
datetime(2009, 9, 4, 11, 31, 12))
rd2 = relativedelta(days=1.5)
self.assertEqual(d1 + rd2,
datetime(2009, 9, 4, 12, 0, 0))
def testRelativeDeltaFractionalHours(self):
rd = relativedelta(days=1, hours=12.5)
d1 = datetime(2009, 9, 3, 0, 0)
self.assertEqual(d1 + rd,
datetime(2009, 9, 4, 12, 30, 0))
def testRelativeDeltaFractionalMinutes(self):
rd = relativedelta(hours=1, minutes=30.5)
d1 = datetime(2009, 9, 3, 0, 0)
self.assertEqual(d1 + rd,
datetime(2009, 9, 3, 1, 30, 30))
def testRelativeDeltaFractionalSeconds(self):
rd = relativedelta(hours=5, minutes=30, seconds=30.5)
d1 = datetime(2009, 9, 3, 0, 0)
self.assertEqual(d1 + rd,
datetime(2009, 9, 3, 5, 30, 30, 500000))
def testRelativeDeltaFractionalPositiveOverflow(self):
# Equivalent to (days=1, hours=14)
rd1 = relativedelta(days=1.5, hours=2)
d1 = datetime(2009, 9, 3, 0, 0)
self.assertEqual(d1 + rd1,
datetime(2009, 9, 4, 14, 0, 0))
# Equivalent to (days=1, hours=14, minutes=45)
rd2 = relativedelta(days=1.5, hours=2.5, minutes=15)
d1 = datetime(2009, 9, 3, 0, 0)
self.assertEqual(d1 + rd2,
datetime(2009, 9, 4, 14, 45))
# Carry back up - equivalent to (days=2, hours=2, minutes=0, seconds=1)
rd3 = relativedelta(days=1.5, hours=13, minutes=59.5, seconds=31)
self.assertEqual(d1 + rd3,
datetime(2009, 9, 5, 2, 0, 1))
def testRelativeDeltaFractionalNegativeDays(self):
# Equivalent to (days=-1, hours=-1)
rd1 = relativedelta(days=-1.5, hours=11)
d1 = datetime(2009, 9, 3, 12, 0)
self.assertEqual(d1 + rd1,
datetime(2009, 9, 2, 11, 0, 0))
# Equivalent to (days=-1, hours=-9)
rd2 = relativedelta(days=-1.25, hours=-3)
self.assertEqual(d1 + rd2,
datetime(2009, 9, 2, 3))
def testRelativeDeltaNormalizeFractionalDays(self):
# Equivalent to (days=2, hours=18)
rd1 = relativedelta(days=2.75)
self.assertEqual(rd1.normalized(), relativedelta(days=2, hours=18))
# Equvalent to (days=1, hours=11, minutes=31, seconds=12)
rd2 = relativedelta(days=1.48)
self.assertEqual(rd2.normalized(),
relativedelta(days=1, hours=11, minutes=31, seconds=12))
def testRelativeDeltaNormalizeFractionalDays2(self):
# Equivalent to (hours=1, minutes=30)
rd1 = relativedelta(hours=1.5)
self.assertEqual(rd1.normalized(), relativedelta(hours=1, minutes=30))
# Equivalent to (hours=3, minutes=17, seconds=5, microseconds=100)
rd2 = relativedelta(hours=3.28472225)
self.assertEqual(rd2.normalized(),
relativedelta(hours=3, minutes=17, seconds=5, microseconds=100))
def testRelativeDeltaNormalizeFractionalMinutes(self):
# Equivalent to (minutes=15, seconds=36)
rd1 = relativedelta(minutes=15.6)
self.assertEqual(rd1.normalized(),
relativedelta(minutes=15, seconds=36))
# Equivalent to (minutes=25, seconds=20, microseconds=25000)
rd2 = relativedelta(minutes=25.33375)
self.assertEqual(rd2.normalized(),
relativedelta(minutes=25, seconds=20, microseconds=25000))
def testRelativeDeltaNormalizeFractionalSeconds(self):
# Equivalent to (seconds=45, microseconds=25000)
rd1 = relativedelta(seconds=45.025)
self.assertEqual(rd1.normalized(),
relativedelta(seconds=45, microseconds=25000))
def testRelativeDeltaFractionalPositiveOverflow2(self):
# Equivalent to (days=1, hours=14)
rd1 = relativedelta(days=1.5, hours=2)
self.assertEqual(rd1.normalized(),
relativedelta(days=1, hours=14))
# Equivalent to (days=1, hours=14, minutes=45)
rd2 = relativedelta(days=1.5, hours=2.5, minutes=15)
self.assertEqual(rd2.normalized(),
relativedelta(days=1, hours=14, minutes=45))
# Carry back up - equivalent to:
# (days=2, hours=2, minutes=0, seconds=2, microseconds=3)
rd3 = relativedelta(days=1.5, hours=13, minutes=59.50045,
seconds=31.473, microseconds=500003)
self.assertEqual(rd3.normalized(),
relativedelta(days=2, hours=2, minutes=0,
seconds=2, microseconds=3))
def testRelativeDeltaFractionalNegativeOverflow(self):
# Equivalent to (days=-1)
rd1 = relativedelta(days=-0.5, hours=-12)
self.assertEqual(rd1.normalized(),
relativedelta(days=-1))
# Equivalent to (days=-1)
rd2 = relativedelta(days=-1.5, hours=12)
self.assertEqual(rd2.normalized(),
relativedelta(days=-1))
# Equivalent to (days=-1, hours=-14, minutes=-45)
rd3 = relativedelta(days=-1.5, hours=-2.5, minutes=-15)
self.assertEqual(rd3.normalized(),
relativedelta(days=-1, hours=-14, minutes=-45))
# Equivalent to (days=-1, hours=-14, minutes=+15)
rd4 = relativedelta(days=-1.5, hours=-2.5, minutes=45)
self.assertEqual(rd4.normalized(),
relativedelta(days=-1, hours=-14, minutes=+15))
# Carry back up - equivalent to:
# (days=-2, hours=-2, minutes=0, seconds=-2, microseconds=-3)
rd3 = relativedelta(days=-1.5, hours=-13, minutes=-59.50045,
seconds=-31.473, microseconds=-500003)
self.assertEqual(rd3.normalized(),
relativedelta(days=-2, hours=-2, minutes=0,
seconds=-2, microseconds=-3))
def testInvalidYearDay(self):
with self.assertRaises(ValueError):
relativedelta(yearday=367)
def testAddTimedeltaToUnpopulatedRelativedelta(self):
td = timedelta(
days=1,
seconds=1,
microseconds=1,
milliseconds=1,
minutes=1,
hours=1,
weeks=1
)
expected = relativedelta(
weeks=1,
days=1,
hours=1,
minutes=1,
seconds=1,
microseconds=1001
)
self.assertEqual(expected, relativedelta() + td)
def testAddTimedeltaToPopulatedRelativeDelta(self):
td = timedelta(
days=1,
seconds=1,
microseconds=1,
milliseconds=1,
minutes=1,
hours=1,
weeks=1
)
rd = relativedelta(
year=1,
month=1,
day=1,
hour=1,
minute=1,
second=1,
microsecond=1,
years=1,
months=1,
days=1,
weeks=1,
hours=1,
minutes=1,
seconds=1,
microseconds=1
)
expected = relativedelta(
year=1,
month=1,
day=1,
hour=1,
minute=1,
second=1,
microsecond=1,
years=1,
months=1,
weeks=2,
days=2,
hours=2,
minutes=2,
seconds=2,
microseconds=1002,
)
self.assertEqual(expected, rd + td)
def testHashable(self):
try:
{relativedelta(minute=1): 'test'}
except:
self.fail("relativedelta() failed to hash!")
class RelativeDeltaWeeksPropertyGetterTest(unittest.TestCase):
"""Test the weeks property getter"""
def test_one_day(self):
rd = relativedelta(days=1)
self.assertEqual(rd.days, 1)
self.assertEqual(rd.weeks, 0)
def test_minus_one_day(self):
rd = relativedelta(days=-1)
self.assertEqual(rd.days, -1)
self.assertEqual(rd.weeks, 0)
def test_height_days(self):
rd = relativedelta(days=8)
self.assertEqual(rd.days, 8)
self.assertEqual(rd.weeks, 1)
def test_minus_height_days(self):
rd = relativedelta(days=-8)
self.assertEqual(rd.days, -8)
self.assertEqual(rd.weeks, -1)
class RelativeDeltaWeeksPropertySetterTest(unittest.TestCase):
"""Test the weeks setter which makes a "smart" update of the days attribute"""
def test_one_day_set_one_week(self):
rd = relativedelta(days=1)
rd.weeks = 1 # add 7 days
self.assertEqual(rd.days, 8)
self.assertEqual(rd.weeks, 1)
def test_minus_one_day_set_one_week(self):
rd = relativedelta(days=-1)
rd.weeks = 1 # add 7 days
self.assertEqual(rd.days, 6)
self.assertEqual(rd.weeks, 0)
def test_height_days_set_minus_one_week(self):
rd = relativedelta(days=8)
rd.weeks = -1 # change from 1 week, 1 day to -1 week, 1 day
self.assertEqual(rd.days, -6)
self.assertEqual(rd.weeks, 0)
def test_minus_height_days_set_minus_one_week(self):
rd = relativedelta(days=-8)
rd.weeks = -1 # does not change anything
self.assertEqual(rd.days, -8)
self.assertEqual(rd.weeks, -1)
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# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from datetime import timedelta, datetime
import unittest
from dateutil import tz
from dateutil import utils
from dateutil.utils import within_delta
from freezegun import freeze_time
UTC = tz.tzutc()
NYC = tz.gettz("America/New_York")
class UtilsTest(unittest.TestCase):
@freeze_time(datetime(2014, 12, 15, 1, 21, 33, 4003))
def testToday(self):
self.assertEqual(utils.today(), datetime(2014, 12, 15, 0, 0, 0))
@freeze_time(datetime(2014, 12, 15, 12), tz_offset=5)
def testTodayTzInfo(self):
self.assertEqual(utils.today(NYC),
datetime(2014, 12, 15, 0, 0, 0, tzinfo=NYC))
@freeze_time(datetime(2014, 12, 15, 23), tz_offset=5)
def testTodayTzInfoDifferentDay(self):
self.assertEqual(utils.today(UTC),
datetime(2014, 12, 16, 0, 0, 0, tzinfo=UTC))
def testDefaultTZInfoNaive(self):
dt = datetime(2014, 9, 14, 9, 30)
self.assertIs(utils.default_tzinfo(dt, NYC).tzinfo,
NYC)
def testDefaultTZInfoAware(self):
dt = datetime(2014, 9, 14, 9, 30, tzinfo=UTC)
self.assertIs(utils.default_tzinfo(dt, NYC).tzinfo,
UTC)
def testWithinDelta(self):
d1 = datetime(2016, 1, 1, 12, 14, 1, 9)
d2 = d1.replace(microsecond=15)
self.assertTrue(within_delta(d1, d2, timedelta(seconds=1)))
self.assertFalse(within_delta(d1, d2, timedelta(microseconds=1)))
def testWithinDeltaWithNegativeDelta(self):
d1 = datetime(2016, 1, 1)
d2 = datetime(2015, 12, 31)
self.assertTrue(within_delta(d2, d1, timedelta(days=-1)))

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# -*- coding: utf-8 -*-
from .tz import *
from .tz import __doc__
#: Convenience constant providing a :class:`tzutc()` instance
#:
#: .. versionadded:: 2.7.0
UTC = tzutc()
__all__ = ["tzutc", "tzoffset", "tzlocal", "tzfile", "tzrange",
"tzstr", "tzical", "tzwin", "tzwinlocal", "gettz",
"enfold", "datetime_ambiguous", "datetime_exists",
"resolve_imaginary", "UTC", "DeprecatedTzFormatWarning"]
class DeprecatedTzFormatWarning(Warning):
"""Warning raised when time zones are parsed from deprecated formats."""

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@ -0,0 +1,415 @@
from six import PY3
from functools import wraps
from datetime import datetime, timedelta, tzinfo
ZERO = timedelta(0)
__all__ = ['tzname_in_python2', 'enfold']
def tzname_in_python2(namefunc):
"""Change unicode output into bytestrings in Python 2
tzname() API changed in Python 3. It used to return bytes, but was changed
to unicode strings
"""
def adjust_encoding(*args, **kwargs):
name = namefunc(*args, **kwargs)
if name is not None and not PY3:
name = name.encode()
return name
return adjust_encoding
# The following is adapted from Alexander Belopolsky's tz library
# https://github.com/abalkin/tz
if hasattr(datetime, 'fold'):
# This is the pre-python 3.6 fold situation
def enfold(dt, fold=1):
"""
Provides a unified interface for assigning the ``fold`` attribute to
datetimes both before and after the implementation of PEP-495.
:param fold:
The value for the ``fold`` attribute in the returned datetime. This
should be either 0 or 1.
:return:
Returns an object for which ``getattr(dt, 'fold', 0)`` returns
``fold`` for all versions of Python. In versions prior to
Python 3.6, this is a ``_DatetimeWithFold`` object, which is a
subclass of :py:class:`datetime.datetime` with the ``fold``
attribute added, if ``fold`` is 1.
.. versionadded:: 2.6.0
"""
return dt.replace(fold=fold)
else:
class _DatetimeWithFold(datetime):
"""
This is a class designed to provide a PEP 495-compliant interface for
Python versions before 3.6. It is used only for dates in a fold, so
the ``fold`` attribute is fixed at ``1``.
.. versionadded:: 2.6.0
"""
__slots__ = ()
def replace(self, *args, **kwargs):
"""
Return a datetime with the same attributes, except for those
attributes given new values by whichever keyword arguments are
specified. Note that tzinfo=None can be specified to create a naive
datetime from an aware datetime with no conversion of date and time
data.
This is reimplemented in ``_DatetimeWithFold`` because pypy3 will
return a ``datetime.datetime`` even if ``fold`` is unchanged.
"""
argnames = (
'year', 'month', 'day', 'hour', 'minute', 'second',
'microsecond', 'tzinfo'
)
for arg, argname in zip(args, argnames):
if argname in kwargs:
raise TypeError('Duplicate argument: {}'.format(argname))
kwargs[argname] = arg
for argname in argnames:
if argname not in kwargs:
kwargs[argname] = getattr(self, argname)
dt_class = self.__class__ if kwargs.get('fold', 1) else datetime
return dt_class(**kwargs)
@property
def fold(self):
return 1
def enfold(dt, fold=1):
"""
Provides a unified interface for assigning the ``fold`` attribute to
datetimes both before and after the implementation of PEP-495.
:param fold:
The value for the ``fold`` attribute in the returned datetime. This
should be either 0 or 1.
:return:
Returns an object for which ``getattr(dt, 'fold', 0)`` returns
``fold`` for all versions of Python. In versions prior to
Python 3.6, this is a ``_DatetimeWithFold`` object, which is a
subclass of :py:class:`datetime.datetime` with the ``fold``
attribute added, if ``fold`` is 1.
.. versionadded:: 2.6.0
"""
if getattr(dt, 'fold', 0) == fold:
return dt
args = dt.timetuple()[:6]
args += (dt.microsecond, dt.tzinfo)
if fold:
return _DatetimeWithFold(*args)
else:
return datetime(*args)
def _validate_fromutc_inputs(f):
"""
The CPython version of ``fromutc`` checks that the input is a ``datetime``
object and that ``self`` is attached as its ``tzinfo``.
"""
@wraps(f)
def fromutc(self, dt):
if not isinstance(dt, datetime):
raise TypeError("fromutc() requires a datetime argument")
if dt.tzinfo is not self:
raise ValueError("dt.tzinfo is not self")
return f(self, dt)
return fromutc
class _tzinfo(tzinfo):
"""
Base class for all ``dateutil`` ``tzinfo`` objects.
"""
def is_ambiguous(self, dt):
"""
Whether or not the "wall time" of a given datetime is ambiguous in this
zone.
:param dt:
A :py:class:`datetime.datetime`, naive or time zone aware.
:return:
Returns ``True`` if ambiguous, ``False`` otherwise.
.. versionadded:: 2.6.0
"""
dt = dt.replace(tzinfo=self)
wall_0 = enfold(dt, fold=0)
wall_1 = enfold(dt, fold=1)
same_offset = wall_0.utcoffset() == wall_1.utcoffset()
same_dt = wall_0.replace(tzinfo=None) == wall_1.replace(tzinfo=None)
return same_dt and not same_offset
def _fold_status(self, dt_utc, dt_wall):
"""
Determine the fold status of a "wall" datetime, given a representation
of the same datetime as a (naive) UTC datetime. This is calculated based
on the assumption that ``dt.utcoffset() - dt.dst()`` is constant for all
datetimes, and that this offset is the actual number of hours separating
``dt_utc`` and ``dt_wall``.
:param dt_utc:
Representation of the datetime as UTC
:param dt_wall:
Representation of the datetime as "wall time". This parameter must
either have a `fold` attribute or have a fold-naive
:class:`datetime.tzinfo` attached, otherwise the calculation may
fail.
"""
if self.is_ambiguous(dt_wall):
delta_wall = dt_wall - dt_utc
_fold = int(delta_wall == (dt_utc.utcoffset() - dt_utc.dst()))
else:
_fold = 0
return _fold
def _fold(self, dt):
return getattr(dt, 'fold', 0)
def _fromutc(self, dt):
"""
Given a timezone-aware datetime in a given timezone, calculates a
timezone-aware datetime in a new timezone.
Since this is the one time that we *know* we have an unambiguous
datetime object, we take this opportunity to determine whether the
datetime is ambiguous and in a "fold" state (e.g. if it's the first
occurence, chronologically, of the ambiguous datetime).
:param dt:
A timezone-aware :class:`datetime.datetime` object.
"""
# Re-implement the algorithm from Python's datetime.py
dtoff = dt.utcoffset()
if dtoff is None:
raise ValueError("fromutc() requires a non-None utcoffset() "
"result")
# The original datetime.py code assumes that `dst()` defaults to
# zero during ambiguous times. PEP 495 inverts this presumption, so
# for pre-PEP 495 versions of python, we need to tweak the algorithm.
dtdst = dt.dst()
if dtdst is None:
raise ValueError("fromutc() requires a non-None dst() result")
delta = dtoff - dtdst
dt += delta
# Set fold=1 so we can default to being in the fold for
# ambiguous dates.
dtdst = enfold(dt, fold=1).dst()
if dtdst is None:
raise ValueError("fromutc(): dt.dst gave inconsistent "
"results; cannot convert")
return dt + dtdst
@_validate_fromutc_inputs
def fromutc(self, dt):
"""
Given a timezone-aware datetime in a given timezone, calculates a
timezone-aware datetime in a new timezone.
Since this is the one time that we *know* we have an unambiguous
datetime object, we take this opportunity to determine whether the
datetime is ambiguous and in a "fold" state (e.g. if it's the first
occurance, chronologically, of the ambiguous datetime).
:param dt:
A timezone-aware :class:`datetime.datetime` object.
"""
dt_wall = self._fromutc(dt)
# Calculate the fold status given the two datetimes.
_fold = self._fold_status(dt, dt_wall)
# Set the default fold value for ambiguous dates
return enfold(dt_wall, fold=_fold)
class tzrangebase(_tzinfo):
"""
This is an abstract base class for time zones represented by an annual
transition into and out of DST. Child classes should implement the following
methods:
* ``__init__(self, *args, **kwargs)``
* ``transitions(self, year)`` - this is expected to return a tuple of
datetimes representing the DST on and off transitions in standard
time.
A fully initialized ``tzrangebase`` subclass should also provide the
following attributes:
* ``hasdst``: Boolean whether or not the zone uses DST.
* ``_dst_offset`` / ``_std_offset``: :class:`datetime.timedelta` objects
representing the respective UTC offsets.
* ``_dst_abbr`` / ``_std_abbr``: Strings representing the timezone short
abbreviations in DST and STD, respectively.
* ``_hasdst``: Whether or not the zone has DST.
.. versionadded:: 2.6.0
"""
def __init__(self):
raise NotImplementedError('tzrangebase is an abstract base class')
def utcoffset(self, dt):
isdst = self._isdst(dt)
if isdst is None:
return None
elif isdst:
return self._dst_offset
else:
return self._std_offset
def dst(self, dt):
isdst = self._isdst(dt)
if isdst is None:
return None
elif isdst:
return self._dst_base_offset
else:
return ZERO
@tzname_in_python2
def tzname(self, dt):
if self._isdst(dt):
return self._dst_abbr
else:
return self._std_abbr
def fromutc(self, dt):
""" Given a datetime in UTC, return local time """
if not isinstance(dt, datetime):
raise TypeError("fromutc() requires a datetime argument")
if dt.tzinfo is not self:
raise ValueError("dt.tzinfo is not self")
# Get transitions - if there are none, fixed offset
transitions = self.transitions(dt.year)
if transitions is None:
return dt + self.utcoffset(dt)
# Get the transition times in UTC
dston, dstoff = transitions
dston -= self._std_offset
dstoff -= self._std_offset
utc_transitions = (dston, dstoff)
dt_utc = dt.replace(tzinfo=None)
isdst = self._naive_isdst(dt_utc, utc_transitions)
if isdst:
dt_wall = dt + self._dst_offset
else:
dt_wall = dt + self._std_offset
_fold = int(not isdst and self.is_ambiguous(dt_wall))
return enfold(dt_wall, fold=_fold)
def is_ambiguous(self, dt):
"""
Whether or not the "wall time" of a given datetime is ambiguous in this
zone.
:param dt:
A :py:class:`datetime.datetime`, naive or time zone aware.
:return:
Returns ``True`` if ambiguous, ``False`` otherwise.
.. versionadded:: 2.6.0
"""
if not self.hasdst:
return False
start, end = self.transitions(dt.year)
dt = dt.replace(tzinfo=None)
return (end <= dt < end + self._dst_base_offset)
def _isdst(self, dt):
if not self.hasdst:
return False
elif dt is None:
return None
transitions = self.transitions(dt.year)
if transitions is None:
return False
dt = dt.replace(tzinfo=None)
isdst = self._naive_isdst(dt, transitions)
# Handle ambiguous dates
if not isdst and self.is_ambiguous(dt):
return not self._fold(dt)
else:
return isdst
def _naive_isdst(self, dt, transitions):
dston, dstoff = transitions
dt = dt.replace(tzinfo=None)
if dston < dstoff:
isdst = dston <= dt < dstoff
else:
isdst = not dstoff <= dt < dston
return isdst
@property
def _dst_base_offset(self):
return self._dst_offset - self._std_offset
__hash__ = None
def __ne__(self, other):
return not (self == other)
def __repr__(self):
return "%s(...)" % self.__class__.__name__
__reduce__ = object.__reduce__

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from datetime import timedelta
class _TzSingleton(type):
def __init__(cls, *args, **kwargs):
cls.__instance = None
super(_TzSingleton, cls).__init__(*args, **kwargs)
def __call__(cls):
if cls.__instance is None:
cls.__instance = super(_TzSingleton, cls).__call__()
return cls.__instance
class _TzFactory(type):
def instance(cls, *args, **kwargs):
"""Alternate constructor that returns a fresh instance"""
return type.__call__(cls, *args, **kwargs)
class _TzOffsetFactory(_TzFactory):
def __init__(cls, *args, **kwargs):
cls.__instances = {}
def __call__(cls, name, offset):
if isinstance(offset, timedelta):
key = (name, offset.total_seconds())
else:
key = (name, offset)
instance = cls.__instances.get(key, None)
if instance is None:
instance = cls.__instances.setdefault(key,
cls.instance(name, offset))
return instance
class _TzStrFactory(_TzFactory):
def __init__(cls, *args, **kwargs):
cls.__instances = {}
def __call__(cls, s, posix_offset=False):
key = (s, posix_offset)
instance = cls.__instances.get(key, None)
if instance is None:
instance = cls.__instances.setdefault(key,
cls.instance(s, posix_offset))
return instance

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# This code was originally contributed by Jeffrey Harris.
import datetime
import struct
from six.moves import winreg
from six import text_type
try:
import ctypes
from ctypes import wintypes
except ValueError:
# ValueError is raised on non-Windows systems for some horrible reason.
raise ImportError("Running tzwin on non-Windows system")
from ._common import tzrangebase
__all__ = ["tzwin", "tzwinlocal", "tzres"]
ONEWEEK = datetime.timedelta(7)
TZKEYNAMENT = r"SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones"
TZKEYNAME9X = r"SOFTWARE\Microsoft\Windows\CurrentVersion\Time Zones"
TZLOCALKEYNAME = r"SYSTEM\CurrentControlSet\Control\TimeZoneInformation"
def _settzkeyname():
handle = winreg.ConnectRegistry(None, winreg.HKEY_LOCAL_MACHINE)
try:
winreg.OpenKey(handle, TZKEYNAMENT).Close()
TZKEYNAME = TZKEYNAMENT
except WindowsError:
TZKEYNAME = TZKEYNAME9X
handle.Close()
return TZKEYNAME
TZKEYNAME = _settzkeyname()
class tzres(object):
"""
Class for accessing `tzres.dll`, which contains timezone name related
resources.
.. versionadded:: 2.5.0
"""
p_wchar = ctypes.POINTER(wintypes.WCHAR) # Pointer to a wide char
def __init__(self, tzres_loc='tzres.dll'):
# Load the user32 DLL so we can load strings from tzres
user32 = ctypes.WinDLL('user32')
# Specify the LoadStringW function
user32.LoadStringW.argtypes = (wintypes.HINSTANCE,
wintypes.UINT,
wintypes.LPWSTR,
ctypes.c_int)
self.LoadStringW = user32.LoadStringW
self._tzres = ctypes.WinDLL(tzres_loc)
self.tzres_loc = tzres_loc
def load_name(self, offset):
"""
Load a timezone name from a DLL offset (integer).
>>> from dateutil.tzwin import tzres
>>> tzr = tzres()
>>> print(tzr.load_name(112))
'Eastern Standard Time'
:param offset:
A positive integer value referring to a string from the tzres dll.
..note:
Offsets found in the registry are generally of the form
`@tzres.dll,-114`. The offset in this case if 114, not -114.
"""
resource = self.p_wchar()
lpBuffer = ctypes.cast(ctypes.byref(resource), wintypes.LPWSTR)
nchar = self.LoadStringW(self._tzres._handle, offset, lpBuffer, 0)
return resource[:nchar]
def name_from_string(self, tzname_str):
"""
Parse strings as returned from the Windows registry into the time zone
name as defined in the registry.
>>> from dateutil.tzwin import tzres
>>> tzr = tzres()
>>> print(tzr.name_from_string('@tzres.dll,-251'))
'Dateline Daylight Time'
>>> print(tzr.name_from_string('Eastern Standard Time'))
'Eastern Standard Time'
:param tzname_str:
A timezone name string as returned from a Windows registry key.
:return:
Returns the localized timezone string from tzres.dll if the string
is of the form `@tzres.dll,-offset`, else returns the input string.
"""
if not tzname_str.startswith('@'):
return tzname_str
name_splt = tzname_str.split(',-')
try:
offset = int(name_splt[1])
except:
raise ValueError("Malformed timezone string.")
return self.load_name(offset)
class tzwinbase(tzrangebase):
"""tzinfo class based on win32's timezones available in the registry."""
def __init__(self):
raise NotImplementedError('tzwinbase is an abstract base class')
def __eq__(self, other):
# Compare on all relevant dimensions, including name.
if not isinstance(other, tzwinbase):
return NotImplemented
return (self._std_offset == other._std_offset and
self._dst_offset == other._dst_offset and
self._stddayofweek == other._stddayofweek and
self._dstdayofweek == other._dstdayofweek and
self._stdweeknumber == other._stdweeknumber and
self._dstweeknumber == other._dstweeknumber and
self._stdhour == other._stdhour and
self._dsthour == other._dsthour and
self._stdminute == other._stdminute and
self._dstminute == other._dstminute and
self._std_abbr == other._std_abbr and
self._dst_abbr == other._dst_abbr)
@staticmethod
def list():
"""Return a list of all time zones known to the system."""
with winreg.ConnectRegistry(None, winreg.HKEY_LOCAL_MACHINE) as handle:
with winreg.OpenKey(handle, TZKEYNAME) as tzkey:
result = [winreg.EnumKey(tzkey, i)
for i in range(winreg.QueryInfoKey(tzkey)[0])]
return result
def display(self):
return self._display
def transitions(self, year):
"""
For a given year, get the DST on and off transition times, expressed
always on the standard time side. For zones with no transitions, this
function returns ``None``.
:param year:
The year whose transitions you would like to query.
:return:
Returns a :class:`tuple` of :class:`datetime.datetime` objects,
``(dston, dstoff)`` for zones with an annual DST transition, or
``None`` for fixed offset zones.
"""
if not self.hasdst:
return None
dston = picknthweekday(year, self._dstmonth, self._dstdayofweek,
self._dsthour, self._dstminute,
self._dstweeknumber)
dstoff = picknthweekday(year, self._stdmonth, self._stddayofweek,
self._stdhour, self._stdminute,
self._stdweeknumber)
# Ambiguous dates default to the STD side
dstoff -= self._dst_base_offset
return dston, dstoff
def _get_hasdst(self):
return self._dstmonth != 0
@property
def _dst_base_offset(self):
return self._dst_base_offset_
class tzwin(tzwinbase):
def __init__(self, name):
self._name = name
with winreg.ConnectRegistry(None, winreg.HKEY_LOCAL_MACHINE) as handle:
tzkeyname = text_type("{kn}\\{name}").format(kn=TZKEYNAME, name=name)
with winreg.OpenKey(handle, tzkeyname) as tzkey:
keydict = valuestodict(tzkey)
self._std_abbr = keydict["Std"]
self._dst_abbr = keydict["Dlt"]
self._display = keydict["Display"]
# See http://ww_winreg.jsiinc.com/SUBA/tip0300/rh0398.htm
tup = struct.unpack("=3l16h", keydict["TZI"])
stdoffset = -tup[0]-tup[1] # Bias + StandardBias * -1
dstoffset = stdoffset-tup[2] # + DaylightBias * -1
self._std_offset = datetime.timedelta(minutes=stdoffset)
self._dst_offset = datetime.timedelta(minutes=dstoffset)
# for the meaning see the win32 TIME_ZONE_INFORMATION structure docs
# http://msdn.microsoft.com/en-us/library/windows/desktop/ms725481(v=vs.85).aspx
(self._stdmonth,
self._stddayofweek, # Sunday = 0
self._stdweeknumber, # Last = 5
self._stdhour,
self._stdminute) = tup[4:9]
(self._dstmonth,
self._dstdayofweek, # Sunday = 0
self._dstweeknumber, # Last = 5
self._dsthour,
self._dstminute) = tup[12:17]
self._dst_base_offset_ = self._dst_offset - self._std_offset
self.hasdst = self._get_hasdst()
def __repr__(self):
return "tzwin(%s)" % repr(self._name)
def __reduce__(self):
return (self.__class__, (self._name,))
class tzwinlocal(tzwinbase):
def __init__(self):
with winreg.ConnectRegistry(None, winreg.HKEY_LOCAL_MACHINE) as handle:
with winreg.OpenKey(handle, TZLOCALKEYNAME) as tzlocalkey:
keydict = valuestodict(tzlocalkey)
self._std_abbr = keydict["StandardName"]
self._dst_abbr = keydict["DaylightName"]
try:
tzkeyname = text_type('{kn}\\{sn}').format(kn=TZKEYNAME,
sn=self._std_abbr)
with winreg.OpenKey(handle, tzkeyname) as tzkey:
_keydict = valuestodict(tzkey)
self._display = _keydict["Display"]
except OSError:
self._display = None
stdoffset = -keydict["Bias"]-keydict["StandardBias"]
dstoffset = stdoffset-keydict["DaylightBias"]
self._std_offset = datetime.timedelta(minutes=stdoffset)
self._dst_offset = datetime.timedelta(minutes=dstoffset)
# For reasons unclear, in this particular key, the day of week has been
# moved to the END of the SYSTEMTIME structure.
tup = struct.unpack("=8h", keydict["StandardStart"])
(self._stdmonth,
self._stdweeknumber, # Last = 5
self._stdhour,
self._stdminute) = tup[1:5]
self._stddayofweek = tup[7]
tup = struct.unpack("=8h", keydict["DaylightStart"])
(self._dstmonth,
self._dstweeknumber, # Last = 5
self._dsthour,
self._dstminute) = tup[1:5]
self._dstdayofweek = tup[7]
self._dst_base_offset_ = self._dst_offset - self._std_offset
self.hasdst = self._get_hasdst()
def __repr__(self):
return "tzwinlocal()"
def __str__(self):
# str will return the standard name, not the daylight name.
return "tzwinlocal(%s)" % repr(self._std_abbr)
def __reduce__(self):
return (self.__class__, ())
def picknthweekday(year, month, dayofweek, hour, minute, whichweek):
""" dayofweek == 0 means Sunday, whichweek 5 means last instance """
first = datetime.datetime(year, month, 1, hour, minute)
# This will work if dayofweek is ISO weekday (1-7) or Microsoft-style (0-6),
# Because 7 % 7 = 0
weekdayone = first.replace(day=((dayofweek - first.isoweekday()) % 7) + 1)
wd = weekdayone + ((whichweek - 1) * ONEWEEK)
if (wd.month != month):
wd -= ONEWEEK
return wd
def valuestodict(key):
"""Convert a registry key's values to a dictionary."""
dout = {}
size = winreg.QueryInfoKey(key)[1]
tz_res = None
for i in range(size):
key_name, value, dtype = winreg.EnumValue(key, i)
if dtype == winreg.REG_DWORD or dtype == winreg.REG_DWORD_LITTLE_ENDIAN:
# If it's a DWORD (32-bit integer), it's stored as unsigned - convert
# that to a proper signed integer
if value & (1 << 31):
value = value - (1 << 32)
elif dtype == winreg.REG_SZ:
# If it's a reference to the tzres DLL, load the actual string
if value.startswith('@tzres'):
tz_res = tz_res or tzres()
value = tz_res.name_from_string(value)
value = value.rstrip('\x00') # Remove trailing nulls
dout[key_name] = value
return dout

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# tzwin has moved to dateutil.tz.win
from .tz.win import *

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# -*- coding: utf-8 -*-
"""
This module offers general convenience and utility functions for dealing with
datetimes.
.. versionadded:: 2.7.0
"""
from __future__ import unicode_literals
from datetime import datetime, time
def today(tzinfo=None):
"""
Returns a :py:class:`datetime` representing the current day at midnight
:param tzinfo:
The time zone to attach (also used to determine the current day).
:return:
A :py:class:`datetime.datetime` object representing the current day
at midnight.
"""
dt = datetime.now(tzinfo)
return datetime.combine(dt.date(), time(0, tzinfo=tzinfo))
def default_tzinfo(dt, tzinfo):
"""
Sets the the ``tzinfo`` parameter on naive datetimes only
This is useful for example when you are provided a datetime that may have
either an implicit or explicit time zone, such as when parsing a time zone
string.
.. doctest::
>>> from dateutil.tz import tzoffset
>>> from dateutil.parser import parse
>>> from dateutil.utils import default_tzinfo
>>> dflt_tz = tzoffset("EST", -18000)
>>> print(default_tzinfo(parse('2014-01-01 12:30 UTC'), dflt_tz))
2014-01-01 12:30:00+00:00
>>> print(default_tzinfo(parse('2014-01-01 12:30'), dflt_tz))
2014-01-01 12:30:00-05:00
:param dt:
The datetime on which to replace the time zone
:param tzinfo:
The :py:class:`datetime.tzinfo` subclass instance to assign to
``dt`` if (and only if) it is naive.
:return:
Returns an aware :py:class:`datetime.datetime`.
"""
if dt.tzinfo is not None:
return dt
else:
return dt.replace(tzinfo=tzinfo)
def within_delta(dt1, dt2, delta):
"""
Useful for comparing two datetimes that may a negilible difference
to be considered equal.
"""
delta = abs(delta)
difference = dt1 - dt2
return -delta <= difference <= delta

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# -*- coding: utf-8 -*-
import warnings
import json
from tarfile import TarFile
from pkgutil import get_data
from io import BytesIO
from dateutil.tz import tzfile as _tzfile
__all__ = ["get_zonefile_instance", "gettz", "gettz_db_metadata"]
ZONEFILENAME = "dateutil-zoneinfo.tar.gz"
METADATA_FN = 'METADATA'
class tzfile(_tzfile):
def __reduce__(self):
return (gettz, (self._filename,))
def getzoneinfofile_stream():
try:
return BytesIO(get_data(__name__, ZONEFILENAME))
except IOError as e: # TODO switch to FileNotFoundError?
warnings.warn("I/O error({0}): {1}".format(e.errno, e.strerror))
return None
class ZoneInfoFile(object):
def __init__(self, zonefile_stream=None):
if zonefile_stream is not None:
with TarFile.open(fileobj=zonefile_stream) as tf:
self.zones = {zf.name: tzfile(tf.extractfile(zf), filename=zf.name)
for zf in tf.getmembers()
if zf.isfile() and zf.name != METADATA_FN}
# deal with links: They'll point to their parent object. Less
# waste of memory
links = {zl.name: self.zones[zl.linkname]
for zl in tf.getmembers() if
zl.islnk() or zl.issym()}
self.zones.update(links)
try:
metadata_json = tf.extractfile(tf.getmember(METADATA_FN))
metadata_str = metadata_json.read().decode('UTF-8')
self.metadata = json.loads(metadata_str)
except KeyError:
# no metadata in tar file
self.metadata = None
else:
self.zones = {}
self.metadata = None
def get(self, name, default=None):
"""
Wrapper for :func:`ZoneInfoFile.zones.get`. This is a convenience method
for retrieving zones from the zone dictionary.
:param name:
The name of the zone to retrieve. (Generally IANA zone names)
:param default:
The value to return in the event of a missing key.
.. versionadded:: 2.6.0
"""
return self.zones.get(name, default)
# The current API has gettz as a module function, although in fact it taps into
# a stateful class. So as a workaround for now, without changing the API, we
# will create a new "global" class instance the first time a user requests a
# timezone. Ugly, but adheres to the api.
#
# TODO: Remove after deprecation period.
_CLASS_ZONE_INSTANCE = []
def get_zonefile_instance(new_instance=False):
"""
This is a convenience function which provides a :class:`ZoneInfoFile`
instance using the data provided by the ``dateutil`` package. By default, it
caches a single instance of the ZoneInfoFile object and returns that.
:param new_instance:
If ``True``, a new instance of :class:`ZoneInfoFile` is instantiated and
used as the cached instance for the next call. Otherwise, new instances
are created only as necessary.
:return:
Returns a :class:`ZoneInfoFile` object.
.. versionadded:: 2.6
"""
if new_instance:
zif = None
else:
zif = getattr(get_zonefile_instance, '_cached_instance', None)
if zif is None:
zif = ZoneInfoFile(getzoneinfofile_stream())
get_zonefile_instance._cached_instance = zif
return zif
def gettz(name):
"""
This retrieves a time zone from the local zoneinfo tarball that is packaged
with dateutil.
:param name:
An IANA-style time zone name, as found in the zoneinfo file.
:return:
Returns a :class:`dateutil.tz.tzfile` time zone object.
.. warning::
It is generally inadvisable to use this function, and it is only
provided for API compatibility with earlier versions. This is *not*
equivalent to ``dateutil.tz.gettz()``, which selects an appropriate
time zone based on the inputs, favoring system zoneinfo. This is ONLY
for accessing the dateutil-specific zoneinfo (which may be out of
date compared to the system zoneinfo).
.. deprecated:: 2.6
If you need to use a specific zoneinfofile over the system zoneinfo,
instantiate a :class:`dateutil.zoneinfo.ZoneInfoFile` object and call
:func:`dateutil.zoneinfo.ZoneInfoFile.get(name)` instead.
Use :func:`get_zonefile_instance` to retrieve an instance of the
dateutil-provided zoneinfo.
"""
warnings.warn("zoneinfo.gettz() will be removed in future versions, "
"to use the dateutil-provided zoneinfo files, instantiate a "
"ZoneInfoFile object and use ZoneInfoFile.zones.get() "
"instead. See the documentation for details.",
DeprecationWarning)
if len(_CLASS_ZONE_INSTANCE) == 0:
_CLASS_ZONE_INSTANCE.append(ZoneInfoFile(getzoneinfofile_stream()))
return _CLASS_ZONE_INSTANCE[0].zones.get(name)
def gettz_db_metadata():
""" Get the zonefile metadata
See `zonefile_metadata`_
:returns:
A dictionary with the database metadata
.. deprecated:: 2.6
See deprecation warning in :func:`zoneinfo.gettz`. To get metadata,
query the attribute ``zoneinfo.ZoneInfoFile.metadata``.
"""
warnings.warn("zoneinfo.gettz_db_metadata() will be removed in future "
"versions, to use the dateutil-provided zoneinfo files, "
"ZoneInfoFile object and query the 'metadata' attribute "
"instead. See the documentation for details.",
DeprecationWarning)
if len(_CLASS_ZONE_INSTANCE) == 0:
_CLASS_ZONE_INSTANCE.append(ZoneInfoFile(getzoneinfofile_stream()))
return _CLASS_ZONE_INSTANCE[0].metadata

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@ -0,0 +1,53 @@
import logging
import os
import tempfile
import shutil
import json
from subprocess import check_call
from tarfile import TarFile
from dateutil.zoneinfo import METADATA_FN, ZONEFILENAME
def rebuild(filename, tag=None, format="gz", zonegroups=[], metadata=None):
"""Rebuild the internal timezone info in dateutil/zoneinfo/zoneinfo*tar*
filename is the timezone tarball from ``ftp.iana.org/tz``.
"""
tmpdir = tempfile.mkdtemp()
zonedir = os.path.join(tmpdir, "zoneinfo")
moduledir = os.path.dirname(__file__)
try:
with TarFile.open(filename) as tf:
for name in zonegroups:
tf.extract(name, tmpdir)
filepaths = [os.path.join(tmpdir, n) for n in zonegroups]
try:
check_call(["zic", "-d", zonedir] + filepaths)
except OSError as e:
_print_on_nosuchfile(e)
raise
# write metadata file
with open(os.path.join(zonedir, METADATA_FN), 'w') as f:
json.dump(metadata, f, indent=4, sort_keys=True)
target = os.path.join(moduledir, ZONEFILENAME)
with TarFile.open(target, "w:%s" % format) as tf:
for entry in os.listdir(zonedir):
entrypath = os.path.join(zonedir, entry)
tf.add(entrypath, entry)
finally:
shutil.rmtree(tmpdir)
def _print_on_nosuchfile(e):
"""Print helpful troubleshooting message
e is an exception raised by subprocess.check_call()
"""
if e.errno == 2:
logging.error(
"Could not find zic. Perhaps you need to install "
"libc-bin or some other package that provides it, "
"or it's not in your PATH?")