def int_check(question):
        while True:
            error = "Please enter an integer that is 1 or more."

            to_check = input(question)

            if to_check == "":
                return "infinite"

            try:
                response = int(to_check)

                if response < 1:
                    print(error)
                    return "invalid"
                else:
                    return response

            except ValueError:
                print(error)



# Main Routine goes here

# Initialise game variables
mode = "regular"
rounds_played = 0

print(" Rock / Paper / Scissors Game")
print()
# Instructions

# Ask user for number of rounds / infinite mode
num_rounds = int_check("How many rounds would you like? press <enter> for infinite mode: ")

if num_rounds == "infinite":
    mode = "infinite"
    num_rounds = 5


# game loop starts here
while rounds_played < num_rounds:

    if mode == "infinite":
        rounds_heading = f"\n Round {rounds_played + 1} (Infinite) Mode"
    else:
        rounds_heading = f"\n Round {rounds_played + 1} of {num_rounds}"

    print(rounds_heading)
    print()

    user_choice = input("Choose: ")

    if user_choice == "xxx":
        break

    rounds_played += 1

    if mode == "infinite":
        num_rounds += 1



# game loop ends here

# game history / statistic area