Michael Seifert added the comment: > zip.__length_hint__() must return NotImplemented or raise TypeError if any of > iterators don't implement __length_hint__ or its __length_hint__() returns > NotImplemented or raises TypeError.
> And what should return zip(range(3), range(2**1000)).__length_hint__()? I > expect 3, not OverflowError. That's actually non-trivial because PyObject_LengthHint just returns a Py_ssize_t. To recover NotImplemented will be complicated and there's no way to discriminate if the OverflowError happened in PyObject_LengthHint or in the called __length_hint__. But TypeError is correctly re-raised in the tests I made. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue26828> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
