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bpo-30940: fix docs for round if second arg is None #2824

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bpo-30940: fix docs for round if second arg is None #2824

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182b473
fix docs for round if second arg is None
daxlab Jul 23, 2017
b1063bd
review changes
daxlab Jul 23, 2017
02496d4
update docstring for round
daxlab Jul 23, 2017
f1f6a83
more clearer docs
daxlab Jul 24, 2017
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6 changes: 3 additions & 3 deletions Doc/library/functions.rst
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Expand Up @@ -1297,7 +1297,7 @@ are always available. They are listed here in alphabetical order.
arguments starting at ``0``).


.. function:: round(number[, ndigits])
.. function:: round(number, ndigits=None)

Return *number* rounded to *ndigits* precision after the decimal
point. If *ndigits* is omitted or is ``None``, it returns the
Expand All @@ -1308,8 +1308,8 @@ are always available. They are listed here in alphabetical order.
equally close, rounding is done toward the even choice (so, for example,
both ``round(0.5)`` and ``round(-0.5)`` are ``0``, and ``round(1.5)`` is
``2``). Any integer value is valid for *ndigits* (positive, zero, or
negative). The return value is an integer if called with one argument,
otherwise of the same type as *number*.
negative). The return value is an integer if *ndigits* is omitted or ``None``.
Otherwise the return value has the same type as *number*.

For a general Python object ``number``, ``round(number, ndigits)`` delegates to
``number.__round__(ndigits)``.
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