[docs] [issue15718] Possible OverflowError in __len__ method undocumented (when called via len() function)

Change by Zac Hatfield-Dodds <zac.hatfield.dodds@gmail.com>: ---------- pull_requests: +17340 pull_request: https://github.com/python/cpython/pull/17934 _______________________________________ Python tracker <report@bugs.python.org> <https://bugs.python.org/issue15718> _______________________________________