Ригистрация, учусь работать с БД

simpleRigistartion.py

import sqlite3

conn =  sqlite3.connect('date.db')
cur = conn.cursor()

cur.execute("""CREATE TABLE IF NOT EXISTS users(
               id INTEGER PRIMARY KEY AUTOINCREMENT,
               name TEXT,
               password TEXT);""")
conn.commit()

def rigistration():
    global conn
    global cur

    login = input("Input your login\n> ")

    check = cur.execute('SELECT * FROM users WHERE name=?', (login, ))

    if check.fetchone() is None: 
        password      = input("Input your password\n> ")
        passwordCheck = input("Input password again\n> ")

        if password == passwordCheck:
            inp = (login,password)
            cur.execute("INSERT INTO users(name,password) VALUES(?,?)",inp)
            conn.commit()
            print("All right, you are registered!")
        else:
            print("Oops,you entered two different passwords. Please try again.")

    else:
      print('Login busy')

rigistration()

Я же написал, что просто учусь работать с бд, да это и было-то когда.