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Tue Jul 8 22:09:36 CEST 2014 · https://mail.python.org/pipermail/python-dev/2014-July/135391.html

>> I think you're misunderstanding is_dir() and is_file(), as these don't
>> actually call os.stat(). All DirEntry methods either call nothing or
>> os.lstat() to get the stat info on the entry itself (not the
>> destination of the symlink).
>
>
> Oh. Extract of your PEP: "is_dir(): like os.path.isdir(), but much cheaper".
>
> genericpath.isdir() and genericpath.isfile() use os.stat(), whereas
> posixpath.islink() uses os.lstat().
>
> Is it a mistake in the PEP?

Ah, you're dead right -- this is basically a bug in the PEP, as
DirEntry.is_dir() is not like os.path.isdir() in that it is based on
the entry itself (like lstat), not following the link.

I'll improve the wording here and update the PEP.

-Ben

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Showing content from https://mail.python.org/pipermail/python-dev/2014-July/135391.html below:

[Python-Dev] Updates to PEP 471, the os.scandir() proposal