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]

Re: Get all subdirs

Florian Lindner wrote:[color=blue]
> how can I get all subdirectories of a given directory[/color]
[color=blue][color=green][color=darkred]
>>> import os
>>> def subdirs(dir):[/color][/color][/color]
.... return [filename for filename in os.listdir(dir)
.... if os.path.isdir(o s.path.join(dir , filename))]
....[color=blue][color=green][color=darkred]
>>> subdirs('.')[/color][/color][/color]
['foo', 'bar', 'baz']

[Peter Kleiweg]

Re: Get all subdirs

Florian Lindner schreef:
[color=blue]
> 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.[/color]

#!/usr/bin/env python

import os

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

for i in os.listdir(dir) :
if os.path.isdir(o s.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,e n,ia,nds,no,sv, (fr,it) S:NL,de,en,(da, ia)
info: http://www.let.rug.nl/~kleiweg/ls.html

[George Yoshida]

Re: Get all subdirs

Florian Lindner wrote:[color=blue]
> 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[/color]

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(f ilename)]

--
George

[Stephen Boulet]

Re: Get all subdirs

Florian Lindner wrote:[color=blue]
> 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[/color]

I'm a fan of the path module:

from path import path

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

Stephen

[Tim Peters]

Re: Get all subdirs

[Florian Lindner][color=blue]
> 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.[/color]

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).ne xt()[1]