#!/usr/bin/env python
import sys
import subprocess
import shlex


def get_groups(raw_cmd):
    cmd = shlex.split(raw_cmd)
    user_groups = subprocess.Popen(cmd, stdout=subprocess.PIPE,stderr=subprocess.PIPE)
    print(user_groups.stdout.read())
    return user_groups.communicate()

def main():
    users = raw_input("Enter a comma separated user list: \n")
    print('\n')
    users = users.split(",")
    for user in users:
        stdout,sterr = get_groups('id %s' % user)


if __name__ == '__main__':
    main()