Chris Jerdonek added the comment: The change for issue 15831 contains a number of places where a single signature line was converted to multiple -- but in the docs and not the docstrings. Those instances can also be examined for this issue. The signature line for str() was not updated in that patch, however. ---------- stage: commit review -> needs patch versions: +Python 2.7, Python 3.4 _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue14783> _______________________________________