```
import sys
import time
import os

print("Hello My guy, welcome to the World of Programs!")

def clearConsole(): lambda: os.system('cls' if os.name in ('nt', 'dos') else 'clear')

def WP():
    new_old = input("Are you new to this world or u are new? ").lower()

    if new_old == "no" or new_old == "old":
        print("Welcome to this world my old friend, How are you doing?")
    elif new_old == "yes" or new_old == "new":
        print("Register: ")
        time.sleep(1.5)
        # asks user to enter their username
        userName = input("Pls enter your user name: ")
        # asks user to enter their password
        passWord = int(input("""Pls enter your password(numbers only): """))
        file = open("us_ps.txt")
        file.write("User name = " + userName + "\n" + "Password = " + passWord + "\n" + "Car color = ")
        file.close()
        clearConsole()
        if userName != "" and passWord != "":
            print("Lets check if you remember your password!)")

            un_check = input("Enter your user name here: ")
            ps_check = int(input("Enter your password here(numbers only): "))

            if un_check == userName and ps_check == passWord:
                print("Welcome to the World of Programs newbie, here you will learn about programs! :)")
            sys.exit()
WP()

```

Error:

```
file.write("User name = " + userName + "\n" + "Password = " + passWord + "\n" + "Car color = ")
TypeError: can only concatenate str (not "int") to str

```