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. ---------- status: open -> closed _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue17159> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
