Terry J. Reedy added the comment: Sergey, please stop calling the current documented behavior a bug. https://docs.python.org/3/library/functions.html#sum says 'The iterable‘s items are normally numbers ... To concatenate a series of iterables, consider using itertools.chain().
To make a change, there must be discussion and approval on python-ideas, including by Guido. I believe that GvR's rejection of optimizing for strings covers optimizing for other sequences. If you want to continue, make a pep-like post there that summarizes the discussion here and makes your current proposal. ---------- versions: +Python 3.5 -Python 3.4 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue18305> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
