New submission from Mike Smith <scgtrp+python-b...@gmail.com>: Using += to append to a list inside a tuple raises a TypeError but succeeds in appending the value anyway:
>>> t = (1, [2, 3, 4]) >>> t[1].append(5) >>> t[1] += [6] Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: 'tuple' object does not support item assignment >>> t (1, [2, 3, 4, 5, 6]) I have reproduced this on all the Python interpreters available to me (CPython 2.6, 2.7, and 3.1). ---------- components: Interpreter Core messages: 131055 nosy: scgtrp priority: normal severity: normal status: open title: += on list inside a tuple raises TypeError but succeds anyway type: behavior versions: Python 2.6, Python 2.7, Python 3.1 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue11562> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
