Re: [Python-Dev] Remaining decisions on PEP 471 -- os.scandir()

2014年7月14日 20:48:06 -0700

On 07/14/2014 07:48 PM, Ben Hoyt wrote:
In any case, here's the modified proposal:
scandir(path='.') -> generator of DirEntry objects, which have:
* name: name as per listdir()
* full_name: full path name (not necessarily absolute), equivalent of
os.path.join(path, entry.name)
* is_dir(follow_symlinks=True): like os.path.isdir(entry.full_name),
but free in most cases; cached per entry
* is_file(follow_symlinks=True): like os.path.isfile(entry.full_name),
but free in most cases; cached per entry
* is_symlink(): like os.path.islink(), but free in most cases; cached per entry
* stat(follow_symlinks=True): like os.stat(entry.full_name,
follow_symlinks=follow_symlinks); cached per entry
The above may not be quite perfect, but it's good, and I think there's
been enough bike-shedding on the API. :-)
Looks doable. Just make sure the cached entries reflect the 'follow_symlinks' setting -- so a symlink could end up with both an lstat cached entry and a stat cached entry.
--
~Ethan~
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