# Check that users have entered a valid
# option based on a list
def string_checker(question, valid_ans=("yes", "no")):
    while True:

        error = f"Enter a valid option from {valid_ans}"

        user_response = input(question).lower()

        for item in valid_ans:
            # check if the user response ia a word in the test
            if item == user_response:
                return item

            elif user_response == item[0]:
                return item

        print(error)
        print()

# Main routine


rps_list = ["rock", "paper", "scissors", "xxx"]

want_instructions = string_checker("Do you want to see the instructions? ")

print(f"You chose: {want_instructions}")

user_options = string_checker("Enter your choice:  ", rps_list)

print(f"You chose: {user_options}")

print("The program has ended")