[py][fmt] Blackened modified files

4 jobs for fix-gen in 5 minutes and 54 seconds (queued for 5 seconds)
Status Job ID Name Coverage
  Build
passed #209160
docker
build_linux_36

00:05:50

82.0%
passed #209161
docker
build_linux_37

00:05:40

82.0%
passed #209158
macosx
build_macosx_36

00:05:45

82.0%
passed #209159
macosx
build_macosx_37

00:05:33

82.0%