Description

closes #15637

If a user has code like

    class Foo:
        @pd.util._decorators.deprecate_kwarg("not", "important")
        def __init__(self, val, important=None):
            self.val = val

cudf.pandas will attempt to proxy Foo.__init__ as an unbound function. Unfortunately when this method is called i.e. Foo(2) we are unable to pass the instance along, self, and call this as Foo.__init__(2).

I'm unsure how we would be able to pass the instance along, so for now I am avoiding proxying these functions (by hackily checking for self in the signature). Open to better solutions

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.