Jens Troeger added the comment: With my update from Python 3.4.3 to Python 3.4.4 (default, Dec 25 2015, 06:14:41) I started experiencing crashes of my applications and I suspect this change is the culprit.
I have a class that inherits from namedtuple, and code calls vars() (i.e. retrieve __dict__) to iterate over an instance's attributes. Much like Raymond points out in http://bugs.python.org/msg249100 For example with 3.4.3: >>> from collections import namedtuple >>> Point = namedtuple('Point', ['x', 'y']) >>> p = Point(1,2) >>> p Point(x=1, y=2) >>> p.__dict__ OrderedDict([('x', 1), ('y', 2)]) >>> vars(p) OrderedDict([('x', 1), ('y', 2)]) After the most recent update this breaks with 3.4.4: >>> from collections import namedtuple >>> Point = namedtuple('Point', ['x', 'y']) >>> p = Point(1,2) >>> p Point(x=1, y=2) >>> p.__dict__ Traceback (most recent call last): File "<stdin>", line 1, in <module> AttributeError: 'Point' object has no attribute '__dict__' >>> vars(p) Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: vars() argument must have __dict__ attribute I am not sure about the fix on my side. Should I use _asdict() instead of vars() although I would argue that vars() should remain functional across this change. Calling _asdict() seems messy to me, but it works: >>> p._asdict() OrderedDict([('x', 1), ('y', 2)]) Why not keep the __dict__ property in tact? @property def __dict__(self): return self._asdict() Thanks! ---------- nosy: +_savage _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue24931> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
