Learn How to Work with Numbers and Strings by Implementing the Luhn Algorithm - Step 32

Python
1

Tell us what’s happening: my code does not work. The task I have to fulfill: Return the result of comparing 0 to total modulo 10

Your code so far

def verify_card_number(card_number):
    sum_of_odd_digits = 0
    card_number_reversed = card_number[::-1]
    odd_digits = card_number_reversed[::2]

    for digit in odd_digits:
        sum_of_odd_digits += int(digit)

    sum_of_even_digits = 0
    even_digits = card_number_reversed[1::2]
    for digit in even_digits:
        number = int(digit) * 2
        if number >= 10:
            number = (number // 10) + (number % 10)
        sum_of_even_digits += number

# User Editable Region

    total = sum_of_odd_digits + sum_of_even_digits
    print(total)
result 0 == total % 10

# User Editable Region

def main():
    card_number = '4111-1111-4555-1142'
    card_translation = str.maketrans({'-': '', ' ': ''})
    translated_card_number = card_number.translate(card_translation)

    verify_card_number(translated_card_number)

main()

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Challenge Information:

Learn How to Work with Numbers and Strings by Implementing the Luhn Algorithm - Step 32

2

you need to use the return keyword, result is not a valid keyword to use. Also you need to indent the line correctly so that it is inside the function

3

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