bad-mcs-method-argument / C0203#
Message emitted:
Metaclass method %s should have %s as first argument
Description:
Used when a metaclass method has a first argument named differently than the value specified in valid-classmethod-first-arg option (default to "cls"), recommended to easily differentiate them from regular instance methods.
Correct code:
# This is a placeholder for correct code for this message.
Additional details:
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Created by the classes checker.