Simple Password and username login

## List of logins that will work for said username and password given above
usernames = ["admin", "Mason", "linux"]
passwords = ["admin", "12345", "toor"]


## Ask for username and password from the user
username = input("Username: ")
password = input("Password: ")

def login():
    ## allows for the var variable to be used outside of the function, to print the index
    ##from the list
    global var

    ## Checks for if the username and password is inside of the list
    try:
        var = usernames.index(username)
        var2 = passwords.index(password)
    ## Returns 0 if either one of the above values are not in the list
    except ValueError:
        return 0

    ## Checks to see if the index of both the username and password are in the same index
    if var == var2:
        return 1
    else:
        return 0

## Checks to see if login() function returns 1 after it is called, which would mean that
## the username and password are in the same index, allowing for the successful login
if(login() == 1):
    print("Logged in as: " + usernames[var])
else:
    print("Username or password is not correct")