How to create user in linux machine?

#!/usr/bin/python3
import sys
import subprocess as sp

args = dict(stdin=sp.PIPE, stdout=sp.PIPE, stderr=sp.PIPE)
if len(sys.argv) == 3 :
    get_user = sys.argv[1]
    get_pass = sys.argv[2].encode() + b'\n'
else:
    print('Enter User and Password properly.')
homdir = '/home/' + get_user
usr = sp.call(['useradd', '-m', '-d', homdir, '-s','/bin/bash', get_user])
passwd = sp.Popen(['passwd', get_user],**args)
for i in range(2):
    passwd.stdin.write(get_pass)