Message 293055 - Python tracker

And, another case, the __text_signature__ and i.signature() is similar, but not the same:

>>> range.__init__.__text_signature__
'($self, /, *args, **kwargs)'
  ^
>>> str(i.signature(range.__init__))
'(self, /, *args, **kwargs)'

So we can't simply compare-and-eliminate this case.