New submission from Shelby Spencer:
The problem occurs when you attempt to perform an os.listdir on a directory
that you don't have access to. You should get an exception thrown. Normally
this occurs, however, if you run the following code:
folder = <some parent folder that has a child folder you don't have read access
to>
for currentDir, subDirs, files = os.walk(folder):
temp = os.listdir(currentDir)
temp will hold an empty list on the subdirectory you don't have access to and
no exception is thrown. This appears to be some sort of conflict between
os.walk and os.listdir. Near as I can tell python is caching the subdirectory
listing for subDirs (os.walk doesn't throw an error on attempting to read a
directory is doesn't have access to, obviously) and returning those results
when os.listdir is called.
----------
components: IO
messages: 208100
nosy: shellster
priority: normal
severity: normal
status: open
title: os.walk conflicts with os.listdir
type: behavior
versions: Python 2.7
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue20259>
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