[Python-Dev] Issue 11406: adding os.scandir(), a directory iterator returning stat-like info

Mon May 13 02:11:28 CEST 2013

2013年5月13日 Ben Hoyt <benhoyt at gmail.com>:
> class DirEntry:
> def __init__(self, name, dirent, lstat, path='.'):
> # User shouldn't need to call this, but called internally by scandir()
> self.name = name
> self.dirent = dirent
> self._lstat = lstat # non-public attributes
> self._path = path
>> def lstat(self):
> if self._lstat is None:
> self._lstat = os.lstat(os.path.join(self._path, self.name))
> return self._lstat
> ...

You need to provide a way to invalidate the stat cache,
DirEntry.clearcache() for example.
Victor