[issue30473] defaultdict raises SystemError, __missing__ returned NULL in thread
Louie Lu
report at bugs.python.org
Thu May 25 10:37:55 EDT 2017
Louie Lu added the comment:
Another way to reproduce this problem:
>>> import datetime
>>> from collections import defaultdict as dd
>>> d = dd(datetime.datetime.now)
>>> d['foo']
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
SystemError: <built-in method __missing__ of collections.defaultdict object at 0x7f072e55b3b8> returned NULL without setting an error
This problem doesn't appear on Python 2.7, too.
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nosy: +louielu
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<http://bugs.python.org/issue30473>
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