[Python-Dev] PEP 471 -- os.scandir() function -- a better and faster directory iterator (original) (raw)
Glenn Linderman v+python at g.nevcal.com
Tue Jul 1 04:04:43 CEST 2014
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On 6/30/2014 4:25 PM, Devin Jeanpierre wrote:
On Mon, Jun 30, 2014 at 3:07 PM, Tim Delaney <timothy.c.delaney at gmail.com> wrote:
On 1 July 2014 03:05, Ben Hoyt <benhoyt at gmail.com> wrote:
So, here's my alternative proposal: add an "ensurelstat" flag to scandir() itself, and don't have any methods on DirEntry, only attributes. ...
Most importantly, regardless of platform, the cached stat result (if not None) would reflect the state of the entry at the time the directory was scanned, rather than at some arbitrary later point in time when lstat() was first called on the DirEntry object. I'm torn between whether I'd prefer the stat fields to be populated on Windows if ensurelstat=False or not. There are good arguments each way, but overall I'm inclining towards having it consistent with POSIX - don't populate them unless ensurelstat=True. +0 for stat fields to be None on all platforms unless ensurelstat=True. This won't work well if lstat info is only needed for some entries. Is that a common use-case? It was mentioned earlier in the thread.
If it is, use ensure_lstat=False, and use the proposed (by me) .refresh() API to update the data for those that need it. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.python.org/pipermail/python-dev/attachments/20140630/ef104e21/attachment.html>
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