python学习笔记：新建用户

import sys
import password
import subprocess


def add_user(username, pass_wd, fname):
    useradd = subprocess.run('id %s &> /dev/null' % username, shell=True)
    if useradd.returncode == 0:
        print('user exist!')
        exit(1)
    subprocess.run('useradd %s' % username, shell=True)
    subprocess.run('echo %s | passwd --stdin %s' % (pass_wd, username), shell=True)
    info = """user information:
username: %s
password: %s
""" % (username, pass_wd)
    f = open(fname, 'a')
    f.write(info)


if __name__ == '__main__':
    username = sys.argv[1]
    pass_wd = password.pa()
    fname = sys.argv[2]
    add_user(username, pass_wd, fname)