I need to run a shell command from python and store the output in a string or file -


this question has answer here:

i use ls example:

i tried:

str = call("ls")

str stored 0.

i tried:

str = call("ls>>txt.txt")

but had no luck (an error occured & txt.txt wasn't created).

how perform straight-forward task.

[i had imported call]

edit: call runs command in shell, returns return value of command. since ls successful, call('ls') returned 0.

if trying run ls, suggest using glob:

from glob import glob file_list = glob('*')

if want more complicated, suggestion use subprocess.popen() this:

from subprocess import popen, pipe  ls_proc = popen('ls', stdout=pipe, stderr=pipe) out, err = ls_proc.communicate()

note, in stdout , stderr keywords, pipe can replaced file-like object, can send output file if want. also, should read popen.communicate() prior using since if command call hangs, python routine hang.


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