Learn How to Work with Numbers and Strings by Implementing the Luhn Algorithm - Step 24

Python
1

Tell us what’s happening:

It tells me that the print(digits) should be inside the for loop, and while it’s there, it tells me that it’s wrong or that there is an indentation error. What should I do?

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)
    print(sum_of_odd_digits)


# User Editable Region

    sum_of_even_digits = 0
    even_digits = card_number_reversed[1::2]
    for digit in even_digits:
        sum_of_even_digits += int(digit)
            print(sum_of_even_digits)

# 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 24

2

I don’t see print(digits) in the for loop. I see two other lines. Also your for loop is using the variable “digit” not “digits”

This part is correct, you can delete the other two lines:

for digit in even_digits: