[Python-Dev] My summary of the scandir (PEP 471) (original) (raw)

Nikolaus Rath Nikolaus at rath.org
Wed Jul 2 23:59:01 CEST 2014

Ben Hoyt <benhoyt at gmail.com> writes:

Thanks for the clarifications and support.

Ah, the wording in the PEP says "Linux, Windows, OS X". Superficially, that said "everywhere" to me. It might be worth calling out specifically some examples where it's not available without an extra system call, just to make the point explicit. Good call. I'll update the wording in the PEP here and try to call out specific examples of where isdir() could call os.stat(). Hard-core POSIX people, do you know when readdir() dtype will be DTUNKNOWN on (for example) Linux or OS X? I suspect this can happen on certain network filesystems, but I'm not sure.

Any fuse file system mounted by some other user and without -o allow_other. For these entries, stat() will fail as well.

Best, -Nikolaus

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