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[3.13] gh-106318: Add examples for str.isnumeric() (GH-142680) (#142716)

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Co-authored-by: Adorilson Bezerra <adorilson@gmail.com>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
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Doc/library/stdtypes.rst
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@ -2019,6 +2019,21 @@ expression support in the :mod:`re` module).
that have the Unicode numeric value property, e.g. U+2155,
VULGAR FRACTION ONE FIFTH. Formally, numeric characters are those with the property
value Numeric_Type=Digit, Numeric_Type=Decimal or Numeric_Type=Numeric.
For example:
.. doctest::
>>> '0123456789'.isnumeric()
True
>>> '٠١٢٣٤٥٦٧٨٩'.isnumeric() # Arabic-indic digit zero to nine
True
>>> '⅕'.isnumeric() # Vulgar fraction one fifth
True
>>> '²'.isdecimal(), '²'.isdigit(), '²'.isnumeric()
(False, True, True)
See also :meth:`isdecimal` and :meth:`isdigit`. Numeric characters are
a superset of decimal numbers.
.. method:: str.isprintable()