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gh-155339: Document the change of behaviour about parsing negative numbers from 3.14 in argparse #155340

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savannahostrowski merged 4 commits into from
Aug 8, 2026
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gh-155339: Document the change of behaviour about parsing negative numbers from 3.14 in argparse #155340

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175c53a
Clarify the change of behaviour from 3.14 about parsing negative numbers
ptim0626 Aug 7, 2026
0e0c6b8
Remove e.g. usage per the style guide
ptim0626 Aug 7, 2026
7d177f3
Rephrase and fix indentation
ptim0626 Aug 7, 2026
92fe28f
Merge branch 'main' into docs-clarify-argparse-neg-num
savannahostrowski Aug 8, 2026
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5 changes: 5 additions & 0 deletions Doc/library/argparse.rst
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Expand Up @@ -1624,6 +1624,11 @@ argument::
See also :ref:`the argparse howto on ambiguous arguments <specifying-ambiguous-arguments>`
for more details.

.. versionchanged:: 3.14
Negative-number matching was expanded to include numbers in scientific
notation (``-2.5e-6``), numbers containing underscores (``-1_234.5``),
and complex numbers (``-1.2e-3j``).

.. _prefix-matching:

Argument abbreviations (prefix matching)
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