11. dircache
— Cached directory listings¶
Deprecated since version 2.6: The dircache
module has been removed in Python 3.
The dircache
module defines a function for reading directory listing
using a cache, and cache invalidation using the mtime of the directory.
Additionally, it defines a function to annotate directories by appending a
slash.
The dircache
module defines the following functions:
-
dircache.
listdir
(path)[source]¶ Return a directory listing of path, as gotten from
os.listdir()
. Note that unless path changes, further call tolistdir()
will not re-read the directory structure.Note that the list returned should be regarded as read-only. (Perhaps a future version should change it to return a tuple?)
-
dircache.
annotate
(head, list)[source]¶ Assume list is a list of paths relative to head, and append, in place, a
'/'
to each path which points to a directory.
>>> import dircache
>>> a = dircache.listdir('/')
>>> a = a[:] # Copy the return value so we can change 'a'
>>> a
['bin', 'boot', 'cdrom', 'dev', 'etc', 'floppy', 'home', 'initrd', 'lib', 'lost+
found', 'mnt', 'proc', 'root', 'sbin', 'tmp', 'usr', 'var', 'vmlinuz']
>>> dircache.annotate('/', a)
>>> a
['bin/', 'boot/', 'cdrom/', 'dev/', 'etc/', 'floppy/', 'home/', 'initrd/', 'lib/
', 'lost+found/', 'mnt/', 'proc/', 'root/', 'sbin/', 'tmp/', 'usr/', 'var/', 'vm
linuz']