[New-bugs-announce] [issue9734] ABC issubclass/isinstance leaks in Python 2
report at bugs.python.org
Wed Sep 1 20:46:13 CEST 2010
New submission from Jim Fulton <jim at zope.com>:
I assume ABCs use some sort of cache for issubclass checks.
I also assume the cache doesn't use weakrefs, leading to leaks in classes created on the fly (as is common in tests).
The attached script demonstrates the leak.
The leak doesn't seem to occur in Python 3.1.2.
title: ABC issubclass/isinstance leaks in Python 2
versions: Python 2.6, Python 2.7
Added file: http://bugs.python.org/file18703/abc_issubclass_leak.py
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