Issue 15193: Exception AttributeError: "'NoneType' object has no attribute (original) (raw)

Issue15193

Created on 2012-06-26 13:05 by prime, last changed 2022-04-11 14:57 by admin. This issue is now closed.

Messages (3)
msg164073 - (view)	Author: Mithilesh Kumar (prime)	Date: 2012-06-26 13:05
Behavior of the program changes with number of charaters used in variable name. Attached file shows a simple example.
msg164074 - (view)	Author: Mark Dickinson (mark.dickinson) *	Date: 2012-06-26 13:19
The exception you report looks incomplete: there should be something after the 'no attribute' saying which attribute lookup failed. In any case, I don't thing this is a bug. It sounds like a result of the unpredictability of cleanup order at interpreter shutdown: you're encountering a situation where the 'Person' reference has already been deleted from the module namespace before the __del__ method for one of the Person instances gets called; so the 'Person' name lookup in the __del__ method fails. You could get around this by replacing 'Person' with 'type(self)' in __del__.
msg164075 - (view)	Author: Amaury Forgeot d'Arc (amaury.forgeotdarc) *	Date: 2012-06-26 13:31
See also this warning message: http://docs.python.org/reference/datamodel.html#object.__del__