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Doc/library/select.rst
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@ -159,6 +159,14 @@ The module defines the following:
library, and does not handle file descriptors that don't originate from library, and does not handle file descriptors that don't originate from
WinSock. WinSock.
.. note::
:c:func:`!select` may not work with file objects that
internally buffer data because select is only aware of data in the
file descriptor provided by the kernel. However, :term:`file-like objects <file object>` often
contain a reference to a file descriptor via a :meth:`!fileno` method
which will work with select.
.. versionchanged:: 3.5 .. versionchanged:: 3.5
The function is now retried with a recomputed timeout when interrupted by The function is now retried with a recomputed timeout when interrupted by
a signal, except if the signal handler raises an exception (see a signal, except if the signal handler raises an exception (see