[issue25016] defaultdict's pop gives a KeyError

[Martin Panter]

Martin Panter added the comment:

I think this is by design. Under <https://docs.python.org/3/library/collections.html#collections.defaultdict.__missing__> it says “__missing__() is _not_ called for any operations besides __getitem__().” What gave you the impression that pop() should return a default value?

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nosy: +martin.panter

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue25016>
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