[issue27275] KeyError thrown by optimised collections.OrderedDict.popitem()

[William Pitcock]

William Pitcock added the comment:

A frequent reproducer is to run the expiringdict tests on Python 3.5.1, unfortunately I cannot come up with a testcase.

Replacing use of popitem() with "del self[next(OrderedDict.__iter__(self))]" removes the KeyErrors and the structure otherwise works fine.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue27275>
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