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gh-133986: Document string split algorithm when sep is None and maxsplit is 0 #133987

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May 14, 2025
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gh-133986: Document string split algorithm when sep is None and maxsplit is 0 #133987

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Document string split algorithm when sep is None and maxsplit is 0
tml May 14, 2025
e0fbc46
Update Doc/library/stdtypes.rst
nedbat May 14, 2025
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13 changes: 13 additions & 0 deletions Doc/library/stdtypes.rst
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Expand Up @@ -2269,6 +2269,18 @@ expression support in the :mod:`re` module).
>>> ' 1 2 3 '.split()
['1', '2', '3']

If *sep* is not specified or is ``None`` and *maxsplit* is ``0``, only
leading runs of consecutive whitespace are considered.

For example::

>>> "".split(None, 0)
[]
>>> " ".split(None, 0)
[]
>>> " foo ".split(maxsplit=0)
['foo ']


.. index::
single: universal newlines; str.splitlines method
Expand Down Expand Up @@ -6040,3 +6052,4 @@ If you need to disable it entirely, set it to ``0``.

.. [5] To format only a tuple you should therefore provide a singleton tuple whose only
element is the tuple to be formatted.

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