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gh-106318: Add example for str.swapcase() method #144575

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18 changes: 16 additions & 2 deletions Doc/library/stdtypes.rst
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Expand Up @@ -2792,8 +2792,22 @@ expression support in the :mod:`re` module).
.. method:: str.swapcase()

Return a copy of the string with uppercase characters converted to lowercase and
vice versa. Note that it is not necessarily true that
``s.swapcase().swapcase() == s``.
vice versa. For example:

.. doctest::

>>> 'Hello World'.swapcase()
'hELLO wORLD'

Note that it is not necessarily true that ``s.swapcase().swapcase() == s``.
For example:

.. doctest::

>>> 'straße'.swapcase().swapcase()
'strasse'

See also :meth:`str.lower` and :meth:`str.upper`.


.. method:: str.title()
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