Get all subdirs

[Florian Lindner]

Hello,
how can I get all subdirectories of a given directory. os.listdir(dir)
doesn't differentiate between directories and files, os.walk seems to me a
bit overkill since it also descends in the subdirs.
Thx,
Florian

[Leif K-Brooks]

Florian Lindner wrote:

how can I get all subdirectories of a given directory

import os
def subdirs(dir): .... return [filename for filename in os.listdir(dir)
.... if os.path.isdir(os.path.join(dir, filename))]
.... subdirs('.')

['foo', 'bar', 'baz']

[Peter Kleiweg]

Florian Lindner schreef:

Hello,
how can I get all subdirectories of a given directory. os.listdir(dir)
doesn't differentiate between directories and files, os.walk seems to me a
bit overkill since it also descends in the subdirs.

#!/usr/bin/env python

import os

dir = '.' # '.' is current directory

for i in os.listdir(dir):
if os.path.isdir(os.path.join(dir, i)):
print i
Bby the way, on Linux, I noticed that the directories '.' and
'..' are not returned by os.listdir
--
Peter Kleiweg L:NL,af,da,de,en,ia,nds,no,sv,(fr,it) S:NL,de,en,(da,ia)
info: http://www.let.rug.nl/~kleiweg/ls.html

[George Yoshida]

Florian Lindner wrote:

Hello,
how can I get all subdirectories of a given directory. os.listdir(dir)
doesn't differentiate between directories and files, os.walk seems to me a
bit overkill since it also descends in the subdirs.
Thx,
Florian

What about testing return values of os.listdir with os.path.isdir?
e.g.,

filter(os.path.isdir, os.listdir(dir))

or if you don't like high-order functions,

[filename for filename in os.listdir(dir) if os.path.isdir(filename)]

--
George

[Stephen Boulet]

Florian Lindner wrote:

Hello,
how can I get all subdirectories of a given directory. os.listdir(dir)
doesn't differentiate between directories and files, os.walk seems to me a
bit overkill since it also descends in the subdirs.
Thx,
Florian

I'm a fan of the path module:

from path import path

p = path("my_directory")
l = [i.name for i in p.dirs()]

Stephen

[Tim Peters]

[Florian Lindner]

how can I get all subdirectories of a given directory. os.listdir(dir)
doesn't differentiate between directories and files, os.walk seems to me a
bit overkill since it also descends in the subdirs.

os.walk() is a generator -- it doesn't descend into anything unless
you resume it. That's the usual case, but you don't need to resume
it.

def subdirs(dir):
"Return list of the subdirectories of dir."
for root, dirs, files in os.walk(dir):
return dirs

works fine, or, perhaps more obscurely,

def subdirs(dir):
"Return list of the subdirectories of dir."
return os.walk(dir).next()[1]