[issue16268] dir(closure) does not find __dir__
Changes by Jesús Cea Avión j...@jcea.es: -- nosy: +jcea ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16268 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16268] dir(closure) does not find __dir__
Amaury Forgeot d'Arc added the comment: The same fix, but with a unit test. Note that object.__dir__ did not exist in previous versions, but I found a similar failure with __format__, which also applies to 2.7. -- nosy: +amaury.forgeotdarc Added file: http://bugs.python.org/file27801/init_cell_type-2.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16268 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16268] dir(closure) does not find __dir__
Changes by Amaury Forgeot d'Arc amaur...@gmail.com: -- stage: - patch review ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16268 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16268] dir(closure) does not find __dir__
Bradley Froehle added the comment: Your patch looks good to me, and I can verify that it properly tests for the issue in Python 3.3. On a related note, I've found that PyType_Ready(...) isn't called for a few other core PyTypeObjects... see #16369. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16268 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16268] dir(closure) does not find __dir__
Changes by Benjamin Peterson benja...@python.org: -- resolution: - duplicate status: open - closed superseder: - Global PyTypeObjects not initialized with PyType_Ready(...) ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16268 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16268] dir(closure) does not find __dir__
Bradley Froehle added the comment: This rather obscure bug seems to be caused by a failure to properly initialize PyCell_Type. Running with GDB, we see that _PyType_Lookup(class 'cell', __dir__) fails in: /* Look in tp_dict of types in MRO */ mro = type-tp_mro; /* If mro is NULL, the type is either not yet initialized by PyType_Ready(), or already cleared by type_clear(). Either way the safest thing to do is to return NULL. */ if (mro == NULL) return NULL; Since: (gdb) print PyCell_Type-tp_mro $9 = (PyObject *) 0x0 Searching the code base shows that we never call PyType_Ready(PyCell_Type). A patch is attached. -- keywords: +patch nosy: +bfroehle Added file: http://bugs.python.org/file27783/init_cell_type.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16268 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16268] dir(closure) does not find __dir__
Bradley Froehle added the comment: Note that we fail to initialize PyCell_Type in all versions of Python, even if there aren't any visible ramifications in earlier versions. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16268 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16268] dir(closure) does not find __dir__
Chris Jerdonek added the comment: Here is a somewhat simpler way to reproduce (following the same definition of x): dir(x) ... TypeError: object does not provide __dir__ x.__dir__ built-in method __dir__ of cell object at 0x10c182950 dir(x) ['__class__', '__delattr__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__le__', '__lt__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', 'cell_contents'] The dir() documentation says, If the object has a method named __dir__(), this method will be called and must return the list of attributes. (from http://docs.python.org/py3k/library/functions.html#dir ) -- nosy: +chris.jerdonek title: dir(closure) claims that a closure has no __dir__, only to work later after manually invoking __dir__ from its type - dir(closure) does not find __dir__ versions: +Python 3.4 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16268 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
