python - running a binary file in python2.7 on linux -


i'm having issues running external program in python using popen pass multiple variables: 

#!/usr/bin/env python import sys import os import shlex, subprocess  = raw_input("enter number:") b = raw_input("enter file:") c = raw_input("enter dir search:")  subprocess.popen(['/bin/sh', "./catnum.bin", "-m",  a, "--remove",  "-o results.txt", b, c])

you use call instead: 

from subprocess import call call(["cactnum.bin", "-m",a, "--remove",  "-o results.txt", b, c])

however per comment of j.f. sebastian

the real issue invalid/unnecessary /bin/sh call b) "-o results.txt" should written "-o", "results.txt" (2 args) i.e., correct call is: subprocess.check_call(["./catnum.bin", "-m", a, "--remove", "-o", "results.txt", b, c]) if catnum.bin executable


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