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authorGeorg Brandl <georg@python.org>2010-04-02 08:39:09 +0000
committerGeorg Brandl <georg@python.org>2010-04-02 08:39:09 +0000
commit49b9192b12ab203bf6c1ec2e29f5b3d8ed3df684 (patch)
tree92b9e5e47da9f4fad6b5294b722446dc68435d8e
parent304b10ef22d81272e52366ef83e63044ee169b26 (diff)
downloadcpython-git-49b9192b12ab203bf6c1ec2e29f5b3d8ed3df684.tar.gz
#2768: add a note on how to get a file descriptor.
-rw-r--r--Doc/library/os.rst4
1 files changed, 4 insertions, 0 deletions
diff --git a/Doc/library/os.rst b/Doc/library/os.rst
index 43d029a93f..b4e39a425d 100644
--- a/Doc/library/os.rst
+++ b/Doc/library/os.rst
@@ -513,6 +513,10 @@ process will then be assigned 3, 4, 5, and so forth. The name "file descriptor"
is slightly deceptive; on Unix platforms, sockets and pipes are also referenced
by file descriptors.
+The :meth:`~file.fileno` method can be used to obtain the file descriptor
+associated with a file object when required. Note that using the file
+descriptor directly will bypass the file object methods, ignoring aspects such
+as internal buffering of data.
.. function:: close(fd)