Execute command using python subprocess #python #subprocess #external-commands

subprocess_external_command.py

#!/bin/bin/env python
import subprocess


#Exeternal Command with args
DPKG = ['dpkg', '-l']
# Execute the command
dpkg_process = subprocess.Popen(DPKG, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
# Wait till process to exit
out, error = dpkg_process.communicate()

# Get return status
rc = dpkg_process.returncode

# Get output data
cmd_out = out.splitlines()
for line in cmd_out[1:]:
  print(line.decode('utf-8'))

# Use similar to get data from 'error' stream in case of error, 
# Left for user to try it out.

#P.S : Script is verbose just to explain, can be more pythonic