Mark Dickinson <dicki...@gmail.com> added the comment: This is a bug in your code, rather than in Python.
A simpler example, for the purposes of explanation: >>> root, total = [0], [] >>> total.append(root) >>> total # good so far [[0]] >>> root[0] = 1 # modify root >>> total # note that total changes here! [[1]] >>> total.append(root) >>> total [[1], [1]] In effect, total contains two references to the same list. Modify that list, and you'll see those changes reflected in `total` as well. ---------- nosy: +mark.dickinson resolution: -> invalid status: open -> closed _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue8023> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
