import random

OPERATORS = [“+”, “-“, “*”]

MIN_OPERAND = 3

MAX_OPERAND = 12

TOTAL_PROBLEM = 10

def generate_problem():

    left = random.randint(MIN_OPERAND, MAX_OPERAND)

    right = random.randint(MIN_OPERAND, MAX_OPERAND)

    operator = random.choice(OPERATORS)

    expr = str(left) + ” ” + operator + ” ” + str(right)

    answer = eval(expr)

    return expr, answer

for i in range(TOTAL_PROBLEM):

    expr, answer = generate_problem()

    while True:

        guess = input(“problem # ” + str(i + 1) + “:” + expr + ” = “)

        if guess == str(answer):

            break

        wrong += 1