#Checks that users enter an integer
def int_check():

    while True:

        error = "Please enter an integer that is 1, 2, or 3"

        try:
            my_num = int(input("Enter an integer: "))

            # checks that the number is 1, 2, or 3
            if my_num < 1 or my_num > 3:
                print(error)
            else:
                print("Your number is", my_num)

        except ValueError:
            print(error)

# main routine goes here
target_score = int_check()
print(target_score)