Corrected some flake8 errors
Corrected some flake8 errors

pkess/beets,shamangeorge/beets,ibmibmibm/beets,jackwilsdon/beets,sampsyo/beets,sampsyo/beets,beetbox/beets,pkess/beets,SusannaMaria/beets,pkess/beets,jackwilsdon/beets,shamangeorge/beets,sampsyo/beets,ibmibmibm/beets,sampsyo/beets,shamangeorge/beets,beetbox/beets,jackwilsdon/beets,SusannaMaria/beets,beetbox/beets,jackwilsdon/beets,ibmibmibm/beets,SusannaMaria/beets,beetbox/beets,ibmibmibm/beets,shamangeorge/beets,pkess/beets,SusannaMaria/beets