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gh-152397: Add note to itertools.chain.from_iterable docs re PEP 798 by Twix1288 · Pull Request #152455 · python/cpython · GitHub

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gh-152397: Add note to itertools.chain.from_iterable docs re PEP 798 #152455

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gh-152397: Add note to itertools.chain.from_iterable docs re PEP 798 #152455

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11 changes: 11 additions & 0 deletions Doc/library/itertools.rst
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Expand Up @@ -208,6 +208,17 @@ loops that truncate the stream.
for iterable in iterables:
yield from iterable

.. note::
In Python 3.15+, the inline unpacking form ``(*it for it in iterables)``
(added by :pep:`798`) provides a more readable alternative for simple
flattening::

# equivalent to chain.from_iterable(iterables)
(*it for it in iterables)

``chain.from_iterable`` remains useful as a first-class callable and
for compatibility with earlier Python versions.


.. function:: combinations(iterable, r)

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