Adding None-guards on the Enum Type

6 jobs for master in 2 minutes and 58 seconds (queued for 4 seconds)
Status Name Job ID Coverage
  Build
passed bdist_egg #3330

00:00:44

passed bdist_wheel #3329

00:00:47

passed sdist #3328

00:00:42

 
  Check
passed twine_check #3331

00:00:43

 
  Upload
canceled pack_dists #3333
allowed to fail manual

canceled twine_upload_test #3332
allowed to fail manual

00:00:02