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Explain that __add__ is the dunder method for operator.__concat__ #141807

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Explain that __add__ is the dunder method for operator.__concat__ #141807

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5728117
Add section to operator.concat and operator.iconcat about dunder method
George-Ogden Nov 20, 2025
606eb6b
Make formatting more similar to not method
George-Ogden Nov 24, 2025
61a1fd8
Add missed word 'method'
George-Ogden Nov 24, 2025
e066e98
Remove trailing whitespace
George-Ogden Nov 24, 2025
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4 changes: 4 additions & 0 deletions Doc/library/operator.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -220,6 +220,8 @@ Operations which work with sequences (some of them with mappings too) include:
__concat__(a, b)

Return ``a + b`` for *a* and *b* sequences.
(Note that there is no :meth:`!__concat__` method.
Instead, the :meth:`~object.__add__` method is called.)


.. function:: contains(a, b)
Expand Down Expand Up @@ -519,6 +521,8 @@ will perform the update, so no subsequent assignment is necessary:
__iconcat__(a, b)

``a = iconcat(a, b)`` is equivalent to ``a += b`` for *a* and *b* sequences.
(Note that there is no :meth:`!__iconcat__` method.
Instead, the :meth:`~object.__iadd__` method is called.)


.. function:: ifloordiv(a, b)
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