import random

score = 0

for question_num in range(1, 11):
    print(f"\n--- Question {question_num} of 10 ---")

    random_1 = random.randint(1, 15)
    random_2 = random.randint(1, 15)

    ans = random_1 * random_2
    print(f"What is {random_1} x {random_2} =")
    user_input = input("Enter your answer: ")

    try:
        user_ans = int(user_input)
        if user_ans == ans:
            print("You got it!")
            score += 1
        else:
            print(f"The correct answer was {ans}.")
    except ValueError:
        print(f"That was not a valid number.")
print("==========")
print("Quiz Finished")
print(f"Your final score was {score}/10")
print("==========")

def string_checker(question, valid_ans=("yes", "no")):
    error = f"Please enter a valid option from the following list: {valid_ans}"

    while True:

        user_response = input(question).lower()

        for item in valid_ans:
            if item == user_response:
                return item

            elif user_response == item[0]:
                return item

        print(error)
        print()

# Displays instructions
def instructions():
    print("""
    
**** Instructions ****

To begin, choose the number of rounds (or press <enter> for
infinite mode).

Then play against the computer. You need to answer the math question
that you get assigned.

Press <xxx> to end the game at anytime.

Good luck!
    """)


# checks for an integer more than 0 (allows <enter>)
def int_check(question):
    while True:
        error = "Please enter a valid integer that is 1 or more."

        to_check = input(question)

        # check for infinite mode
        if to_check =="":
            return "infinite"

        try:
            response = int(to_check)

            # checks that the number is more than / equal to 1
            if response < 1:
                print(error)
            else:
                return response

        except ValueError:
            print(error)