[issue31952] Weird behavior on tupple item assignment

2017-11-05 Thread Lucas Bertoldo
Change by Lucas Bertoldo <lvcas.berto...@gmail.com>: -- versions: +Python 2.7, Python 3.5 ___ Python tracker <rep...@bugs.python.org> <https://bugs.python

[issue31952] Weird behavior on tupple item assignment

2017-11-05 Thread Lucas Bertoldo
New submission from Lucas Bertoldo <lvcas.berto...@gmail.com>: Basically, I typed: >>> m = (list(), list()) then I got, this, as expected: >>> m[0] += [1] Traceback (most recent call last): File "<pyshell#8>", line 1, in m[0] += [1] TypeErr