signin

#signin
#signin.py

#skip420@skip420:~/Desktop$ python3 signin.py
Do you have an account?/yes/no no
Enter username: testme
Enter password: test8888
Enter confirm password: test8888
User was successfully registered











import os.path

if not os.path.exists('register.txt'):
    file = open('register.txt', 'w')
    file.close()


def register():
    username = input('Enter username: ')
    if username in open('register.txt', 'r').read():
        print('Username already exists')
        exit()
    password = input('Enter password: ')
    c_password = input('Enter confirm password: ')
    if password != c_password:
        print('Sorry password not match')
        exit()
    handle = open('register.txt', 'a')
    handle.write(username)
    handle.write(' ')
    handle.write(password)
    handle.write('\n')
    handle.close()
    print('User was successfully registered')
    exit()


def login():
    username = input('Enter username: ')
    password = input('Enter password: ')
    get_data = open('register.txt', 'r').readlines()
    users_data = []
    for user in get_data:
        users_data.append(user.split())

    total_user = len(users_data)
    increment = 0
    login_success = 0
    while increment < total_user:
        usernames = users_data[increment][0]
        passwords = users_data[increment][1]
        if username == usernames and password == passwords:
            login_success = 1

        increment += 1

    if login_success == 1:
        print('Welcome ' + username)
    else:
        print('invalid username & password')


question = input('Do you have an account?/yes/no')

if question == 'yes':
    login()
else:
    register()