Hanukkah Riddle - Solution for 2 people

# A python solution with 2 people, for this riddle: https://www.idf.il/%D7%90%D7%AA%D7%A8%D7%99%D7%9D/%D7%96%D7%A8%D7%95%D7%A2-%D7%94%D7%99%D7%91%D7%A9%D7%94/2020/%D7%97%D7%99%D7%93%D7%AA-%D7%9E%D7%A6%D7%95%D7%91-%D7%9E%D7%99%D7%95%D7%97%D7%93%D7%AA-%D7%9C%D7%97%D7%A0%D7%95%D7%9B%D7%94/


from itertools import product

# Numbers: 0...PEOPLE_NUM-1
PEOPLE_NUM = 2 # (100 is too slow)

def get_all_possible_numbers(people_num: int):
    return (list(i) for i in product(range(0, people_num), repeat=people_num))

def hide_number_in_index(numbers: list, index: int):
    numbers_copy = numbers.copy()
    numbers_copy[index] = None
    return numbers_copy

def find_good_guess_index(guesses: list, real_numbers: list):
    for ind, guess in enumerate(guesses):
        if guess == real_numbers[ind]:
            return ind
    return -1

# Anything you need to store before start. Readonly.
store = ()

def single_guess(my_ind: int, all_people_except_me: list):
    return all_people_except_me[1 - my_ind] ^ my_ind


# Start:

all_good = True

for real_numbers in get_all_possible_numbers(PEOPLE_NUM):
    guesses = [single_guess(ind, hide_number_in_index(real_numbers, ind))
        for ind, num in enumerate(real_numbers)]

    good_guess_index = find_good_guess_index(guesses, real_numbers)
    is_good_guess = good_guess_index > -1

    if not is_good_guess:
        all_good = False

    message = f"GOOD! ({good_guess_index})" if is_good_guess else "*BAD!*"
    print(f'{real_numbers} TO {guesses}   => {message}')

print(f"All Good: {all_good}")