Learn How to Work with Numbers and Strings by Implementing the Luhn Algorithm - Step 25

Python
1

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# User Editable Region

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)

    sum_of_even_digits = 0
    even_digits = card_number_reversed[1::2]
    for digit in even_digits:
        sum_of_odd_digits += odd_digits
        print(sum_of_odd_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 25

2

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3

Hi @Tarzan112345678

The instructions are asking you to remove the print call for sum of odd digits.

There is an error with your code. Please reset the set, then remove the print call.

Happy coding

1 Like
4

of course. I misunderstood the instructions , thank you so much

2 Likes
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