Eryk Sun added the comment: > the sq_length slot in the weakproxy type is set to proxy_length.
Nice. Its tp_getattro gets in the way of using __len__ directly, but this can be side stepped by manually binding the descriptor: class Test(object): def __len__(self): return 2**31 + 5 >>> t = Test() >>> p = weakref.proxy(t) >>> p.__len__() 2147483653L >>> type(p).__len__.__get__(p)() -2147483643 ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue26423> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com