Mark Dickinson <dicki...@gmail.com> added the comment: To sum lists, you need to supply a second argument to sum:
>>> sum([[1, 2], ['x', 'y']], []) [1, 2, 'x', 'y'] The default value of the second argument is 0, which is why you're seeing the TypeError. ---------- nosy: +mark.dickinson resolution: -> invalid status: open -> closed _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue7176> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
