Tue, 15 Aug 2017 17:01:51 +0300 Andrey Skvortsov clean-up: fix PEP8 E711 comparison to None should be 'if cond is not None:'
Tue, 15 Aug 2017 16:48:49 +0300 Andrey Skvortsov clean-up: fix PEP8 E225 missing whitespace around operator
Tue, 15 Aug 2017 16:01:18 +0300 Andrey Skvortsov clean-up: fix PEP8 E303 too many blank lines