mypy: ignore missing hints in external

misc/render_rrd.py

@@ -5,7 +5,7 @@ from ast import literal_eval
 from collections import namedtuple
 from typing import Any, Dict
 
-import rrdtool
+import rrdtool  # type: ignore
 
 from srnemqtt.solar_types import DataName
 

misc/test_serial.py

@@ -3,7 +3,7 @@ import os
 import sys
 from time import sleep
 
-from serial import Serial
+from serial import Serial  # type: ignore
 
 print(sys.path)
 sys.path.insert(1, os.path.dirname(os.path.dirname(sys.argv[0])))

misc/test_serial_loopback.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-from serial import Serial
+from serial import Serial  # type: ignore
 
 with Serial("/dev/ttyUSB0", baudrate=9600, timeout=2) as x:
     x.write(b"Hello, World!")