:( Little Professor generates 10 problems before exiting

Question

hi i am solving this question >> https://cs50.harvard.edu/python/2022/psets/4/professor/ my code is 100% correct. i have tested it several times but check50 is not able to pass all the tests. this is my code >

import random


def main():

    level = get_level()
    questions = 10
    lives = 3
    score = 0
    while questions > 0:
        num1, num2, suum = generate_integer(level)
        while lives > 0:
            guess = get_input(num1, num2)
            if guess != suum:
                print("EEE")
                lives -= 1
                continue
            score += 1
            break

        if lives != 3:
            print(f"{num1} + {num2} = {suum}")
            lives =3
        questions -= 1
    print(F"Score: {score}")


def get_input(num1, num2):
    while True:
        guess = input(f"{num1} + {num2} = ")
        try:
            guess = int(guess)
            return guess
        except ValueError:
            return guess

def get_level():
    while True:
        try:
            level = input("Level:")
            level = int(level)
        except ValueError:
            continue

        if level < 1:
            continue
        elif level > 3:
            continue
        else:
            return level

def generate_integer(level):
    if level == 1:
        num1 = random.randrange(9)
        num2 = random.randrange(9)
        return num1, num2, (num1 + num2)

    if level == 2:
        num1 = random.randrange(10, 99)
        num2 = random.randrange(10, 99)
        return num1, num2, (num1 + num2)

    if level == 3:
        num1 = random.randrange(100, 999)
        num2 = random.randrange(100, 999)
        return num1, num2, (num1 + num2)


if __name__ == "__main__":
    main()

these are the errors that i am getting even though i think my code is 100% correct

Answer 1

i used randint instead of randrange to generate unique questions. dunno why it didnt work with randrange.

    if level == 1:
        num1 = random.randint(0, 9)
        num2 = random.randint(0, 9)
        return num1, num2, (num1 + num2)

    if level == 2:
        num1 = random.randint(10, 99)
        num2 = random.randint(10, 99)
        return num1, num2, (num1 + num2)

    if level == 3:
        num1 = random.randint(100, 999)
        num2 = random.randint(100, 999)
        return num1, num2, (num1 + num2)

Answer 2

I had the same issue. Even though the code is different, I used sys.exit(0) after printing the score. I've tried sys.exit("Score: " + f"{score}") but it raised the exception. That is why you should use 0 because 0 indicates the successful execution of a program.

Answer 3

I'm surprised your code passed with that change. The project specification says generate_integer() "should return a randomly generated non-negative integer with level digits", not a tuple of integers.

Also, I think you just got lucky. I used randint() and sometimes it returned duplicate X,Y pairs (and sometimes it didn't). To demonstrate, I created 2 test functions: one uses randrange() and the other uses randint(). Run the code below enough times and you eventually you will get 4 different behaviors: 1) both methods create 10 unique pairs, 2) randrange() creates 10 unique pairs and randint() creates 1 or more duplicates, 3) randrange() creates 1 or more duplicates and randint() creates 10 unique pairs. or 4) both methods create 1 or more duplicate equations. It's very random....

import random

def test_randrange():
    print(f'Testing pairs from randrange')
    eqn_data = []
    for cnt in range(10):
        num1 = random.randrange(9)
        num2 = random.randrange(9)
        if (num1, num2) in eqn_data:
            print(f'Duplicate created for {num1}, {num2} pair')
        else:
            eqn_data.append((num1, num2))
    
    print(f'Number of unique pairs from randrange: {len(eqn_data)}')

def test_randint():
    print(f'Testing pairs from randint')
    eqn_data = []
    for cnt in range(10):
        num1 = random.randint(0, 9)
        num2 = random.randint(0, 9)
        if (num1, num2) in eqn_data:
            print(f'Duplicate created for {num1}, {num2} pair')
        else:
            eqn_data.append((num1, num2))
    
    print(f'Number of unique pairs from randint: {len(eqn_data)}')

test_randrange()
test_randint()  

Answer 4

I also encountered this problem:

Check50 Tips: “Cause: expected exit code 0, not 1”.

So need to use sys.exit(0) Exit the program (main()), for example:

def main():
    ...
    print(f"Score: {score}")
    sys.exit(0)