[docs] [issue35318] Check accuracy of str() doc string for its encoding argument

Raymond Hettinger <raymond.hettinger@gmail.com> added the comment: We may need to reword this a bit to show that the default system encoding only applies if "errors" is specified; otherwise, the argument pattern is mysterious. ---------- _______________________________________ Python tracker <report@bugs.python.org> <https://bugs.python.org/issue35318> _______________________________________