[docs] [issue19934] collections.Counter.most_common does not document `None` as acceptable input.

[Matthew Gilson]

New submission from Matthew Gilson:

Reading the source for collections.Counter.most_common, the docstring mentions that `n` can be `None` or omitted, but the online documentation does not mention that `n` can be `None`.

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assignee: docs at python
components: Documentation
messages: 205648
nosy: docs at python, mgilson
priority: normal
severity: normal
status: open
title: collections.Counter.most_common does not document `None` as acceptable input.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue19934>
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