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bpo-30940: specify what happens if ndigits is None or omitted #3256

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elenaoat wants to merge 5 commits into from
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bpo-30940: specify what happens if ndigits is None or omitted #3256

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e1ccc9e
Add a reference link to the regular expression objects
Aug 27, 2017
3260b04
bpo-30940: specify what happens if ndigits is None or omitted
Aug 31, 2017
86d33a1
Merge branch 'master' into issue30940
elenaoat Aug 31, 2017
ac9f872
Make the explanation more precise.
Sep 7, 2017
9cb1e24
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Sep 7, 2017
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Make the explanation more precise.
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elena
elena committed Sep 7, 2017
commit ac9f872644fdc5571b9933e2b9fd2cc2eb96d4aa
5 changes: 3 additions & 2 deletions Doc/library/functions.rst
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Expand Up @@ -1311,8 +1311,9 @@ are always available. They are listed here in alphabetical order.
negative). The return value is an integer if *ndigits* is omitted or is ``None``.
Otherwise the return value has the same type as *number*.

For a general Python object ``number``, ``round`` delegates to
``number.__round__``.
For a general Python object, ``round(number)`` or ``round(number, None)``
delegates to ``number.__round__()``, and ``round(number, ndigits)`` delegates
to ``number.__round__(ndigits)``.

.. note::

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