import os
import re

q_user = r'([\d\w]{3,})\,([\d\w]{3,})\n'
q_name = r'(name)\,([\d\w]{3,})\n'
q_password = r'([\d\w]{3,})\,(password)\n'

print 'Welcome to our Autorization Service!'
menu = input('Print 1 for registration or 2 for login')

if not os.path.isfile('users'):
    open('users', 'w').close()
f = open('users', 'a')

def name_exists(name):
    users = f.read()
    r = re.search(q_name.replace('name', name), users)
    return r


if menu == '1':
    print 'Registration!\n*****')
    name = input('Your name: ')

    pass_success = False
    while not pass_success:
        password = input('Your password: ')
        if input('Repeat password: ') == password:
            pass_success = True