[issue17159] Remove explicit type check from inspect.Signature.from_function()
Stefan Behnel
report at bugs.python.org
Sun Feb 2 12:42:14 CET 2014
Stefan Behnel added the comment:
Ok, I think I figured it out now.
Essentially, Cython's functions type, despite starting with the same struct layout as PyCFunction, must not visibly inherit from PyCFunction. Consequently, inspect.isbuiltin() returns False, as does inspect.isfunction() - sadly.
With Yury's changes that are currently committed, this triggers the fallback that checks for the function-like signature, which in turn makes Signature.from_function() properly analyse the signature, including default arguments, annotations, etc.
So, nothing left to change on CPython side for this ticket. And thanks again for the help. Closing as fixed.
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status: open -> closed
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<http://bugs.python.org/issue17159>
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