eryksun added the comment:
Ok, I think I understand now. You chose an indirect check to avoid the race
condition. If we have write access to the directory, then the PermissionError
must be because a directory exists with the same name.
Unfortunately os.access doesn't currently tell us this information. Moreover,
checking `isdir(dir) and access(dir, W_OK)` is actually redundant as things
currently stand. If `isdir` returns True that means GetFileAttributes didn't
fail, which means `access` must return True as designed:
return_value = (attr != INVALID_FILE_ATTRIBUTES) &&
( !(mode & 2) ||
!(attr & FILE_ATTRIBUTE_READONLY) ||
(attr & FILE_ATTRIBUTE_DIRECTORY) );
----------
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue22107>
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