Christian Heimes <li...@cheimes.de> added the comment:
[[0,0]]*4 is not a matrix definition. You are defining a list that shares the same list object four times. It's a common misunderstanding how list works, see https://stackoverflow.com/questions/240178/list-of-lists-changes-reflected-across-sublists-unexpectedly ---------- nosy: +christian.heimes resolution: -> not a bug stage: -> resolved status: open -> closed _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue35515> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com