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merge heads (#13887)

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Benjamin Peterson 2012-01-27 09:14:29 -05:00
parent b46d4b770d 871b9d169d
commit bc9f1b5a14
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Doc/library/collections.rst
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@ -595,6 +595,11 @@ stack manipulations such as ``dup``, ``drop``, ``swap``, ``over``, ``pick``,
:class:`dict` class when the requested key is not found; whatever it
returns or raises is then returned or raised by :meth:`__getitem__`.
Note that :meth:`__missing__` is *not* called for any operations besides
:meth:`__getitem__`. This means that :meth:`get` will, like normal
dictionaries, return ``None`` as a default rather than using
:attr:`default_factory`.
:class:`defaultdict` objects support the following instance variable: