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[3.14] Document None for timeout argument of select.select (GH-142177) #142182

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Dec 2, 2025
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[3.14] Document None for timeout argument of select.select (GH-142177) #142182

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5 changes: 3 additions & 2 deletions Doc/library/select.rst
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Expand Up @@ -115,7 +115,7 @@ The module defines the following:
:ref:`kevent-objects` below for the methods supported by kevent objects.


.. function:: select(rlist, wlist, xlist[, timeout])
.. function:: select(rlist, wlist, xlist, timeout=None)

This is a straightforward interface to the Unix :c:func:`!select` system call.
The first three arguments are iterables of 'waitable objects': either
Expand All @@ -130,7 +130,8 @@ The module defines the following:
Empty iterables are allowed, but acceptance of three empty iterables is
platform-dependent. (It is known to work on Unix but not on Windows.) The
optional *timeout* argument specifies a time-out as a floating-point number
in seconds. When the *timeout* argument is omitted the function blocks until
in seconds.
When the *timeout* argument is omitted or ``None``, the function blocks until
at least one file descriptor is ready. A time-out value of zero specifies a
poll and never blocks.

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