call command from python

call_command.py

import subprocess
def call_command(command):
    process = subprocess.Popen(command.split(' '),
                               stdout=subprocess.PIPE,
                               stderr=subprocess.PIPE)
    return process.communicate()

# An example
if __name__ == "__main__":
     
     cmd = "rsync -avz %s %s"%(src, dest)
     print cmd
     _, err = call_command(cmd)
     if err!='': print err