bad-mcs-classmethod-argument / C0204#
Metaclass class method %s should have %s as first argument
Used when a metaclass class method has a first argument named differently than the value specified in valid-metaclass-classmethod-first-arg option (default to "mcs"), recommended to easily differentiate them from regular instance methods.
# This is a placeholder for correct code for this message.
You can help us make the doc better by contributing !
Created by the classes checker.