all: implement black as code formatter

passbook/sources/oauth/utils.py

@@ -12,6 +12,6 @@ def user_get_or_create(**kwargs):
     except IntegrityError:
         # At this point we've already checked that there is no existing connection
         # to any user. Hence if we can't create the user,
-        kwargs['username'] = '%s_1' % kwargs['username']
+        kwargs["username"] = "%s_1" % kwargs["username"]
         new_user = User.objects.create_user(**kwargs)
     return new_user