how to get output.

[indu_shreenath]

Hey,
I want to get the output of "DIR /AD /B" command to a varriable using
python. How can I do this?
Thanks,
Indu

 

[Diez B. Roggisch]

Hey,
I want to get the output of "DIR /AD /B" command to a varriable using
python. How can I do this?

Using the subprocess-module.


However, I'm not sure what DIR /AD /B does - but there are many
functions in module os that might deliver what you want without invoking
an external command.

Diez

 

[indu_shreenath]

Hey,

I did write the following:
but it does not work.

import subprocess as sp
try:
= sp.Popen("DIR . /AD /B", stdout=sp.PIPE)
result = p.communicate()[0]
print result
except:
print "error"

This throws error.
DIR . /AD /B will list out only directories in the current directory.

Thanks,
Indu

 

[indu_shreenath]

I corrected a typ below.

Hey,

I did write the following:
but it does not work.

import subprocess as sp
try:
p = sp.Popen("DIR . /AD /B", stdout=sp.PIPE)
result = p.communicate()[0]
print result
except:
print "error"

This throws error.
DIR . /AD /B will list out only directories in the current directory.

Thanks,
Indu

indu_shreenath schrieb:

Using the subprocess-module.

However, I'm not sure what DIR /AD /B does - but there are many
functions in module os that might deliver what you want without invoking
an external command.

Diez- Hide quoted text -

- Show quoted text -

 

[Peter Otten]

I corrected a typ below.

Hey,

I did write the following:
but it does not work.

import subprocess as sp
try:
p = sp.Popen("DIR . /AD /B", stdout=sp.PIPE)
result = p.communicate()[0]
print result
except:
print "error"

This throws error.
DIR . /AD /B will list out only directories in the current directory.

try:
...
except:
print "error"

is a really bad idea because it hides any meaningful and therefore valuable
information about the error.

IIRC the "dir" command is internal to the dos shell and therefore has to be
called indirectly. The actual command is "cmd", not "dir":

[following snippet found at
http://www.python-forum.de/viewtopic.php?p=73048&sid=13808229538bd52de4ef75c32cf67856]

import subprocess
args = ["cmd", "/C", "dir", "J:\\", "/O", "/AD", "/B"]
process = subprocess.Popen(args, stdout = subprocess.PIPE, stderr = subprocess.STDOUT)
print process.stdout.read()

If you just want a list of subdirectories, here's a better approach:

def directories(folder): .... return os.walk(folder).next()[1]
directories(".")

[snip list of subdirectories of cwd]

Peter

 

[Larry Bates]

I corrected a typ below.

Hey,

I did write the following:
but it does not work.

import subprocess as sp
try:
p = sp.Popen("DIR . /AD /B", stdout=sp.PIPE)
result = p.communicate()[0]
print result
except:
print "error"

This throws error.
DIR . /AD /B will list out only directories in the current directory.

Thanks,
Indu

indu_shreenath schrieb:
Hey,
I want to get the output of "DIR /AD /B" command to a varriable using
python. How can I do this?
Using the subprocess-module.
However, I'm not sure what DIR /AD /B does - but there are many
functions in module os that might deliver what you want without invoking
an external command.
Diez- Hide quoted text -

- Show quoted text -

That is better done in python with:

import os
dirs=[d for d in os.listdir(os.curdir) if os.path.isdir(d)]

or

dirs=filter(os.path.isdir, os.listdir(os.curdir))

-Larry

 

[indu_shreenath]

I corrected a typ below.

Hey,
I did write the following:
but it does not work.
import subprocess as sp
try:
p = sp.Popen("DIR . /AD /B", stdout=sp.PIPE)
result = p.communicate()[0]
print result
except:
print "error"
This throws error.
DIR . /AD /B will list out only directories in the current directory.
Thanks,
Indu
indu_shreenath schrieb:
Hey,
I want to get the output of "DIR /AD /B" command to a varriable using
python. How can I do this?
Using the subprocess-module.
However, I'm not sure what DIR /AD /B does - but there are many
functions in module os that might deliver what you want without invoking
an external command.
Diez- Hide quoted text -
- Show quoted text -

That is better done in python with:

import os
dirs=[d for d in os.listdir(os.curdir) if os.path.isdir(d)]

or

dirs=filter(os.path.isdir, os.listdir(os.curdir))

-Larry- Hide quoted text -

- Show quoted text -

Thanks I could implement it.

Indu