Method __new__

Lib/_collections_abc.py:1066–1074

(cls, name, bases, namespace, **kwargs)

class _DeprecateByteStringMeta(ABCMeta):
    def __new__(cls, name, bases, namespace, **kwargs):
        if name != "ByteString":
            import warnings

            warnings._deprecated(
                "collections.abc.ByteString",
                remove=(3, 17),
            )
        return super().__new__(cls, name, bases, namespace, **kwargs)

    def __instancecheck__(cls, instance):
        import warnings