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closes bpo-25461: Update os.walk() docstring to match the online docs. (GH-11836) 

(cherry picked from commit 734f1202a5)

Co-authored-by: Bernt Røskar Brenna <bernt.brenna@gmail.com>
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Miss Islington (bot) 2019-09-10 06:21:57 -07:00 committed by GitHub
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Lib/os.py
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@ -300,10 +300,11 @@ def walk(top, topdown=True, onerror=None, followlinks=False):
(e.g., via del or slice assignment), and walk will only recurse into the
subdirectories whose names remain in dirnames; this can be used to prune the
search, or to impose a specific order of visiting. Modifying dirnames when
topdown is false is ineffective, since the directories in dirnames have
already been generated by the time dirnames itself is generated. No matter
the value of topdown, the list of subdirectories is retrieved before the
tuples for the directory and its subdirectories are generated.
topdown is false has no effect on the behavior of os.walk(), since the
directories in dirnames have already been generated by the time dirnames
itself is generated. No matter the value of topdown, the list of
subdirectories is retrieved before the tuples for the directory and its
subdirectories are generated.
By default errors from the os.scandir() call are ignored. If
optional arg 'onerror' is specified, it should be a function; it