Learn How to Work with Numbers and Strings by Implementing the Luhn Algorithm - Step 19

Python
1

Tell us what’s happening:

cannot understand the step properly and cannot figure out what’s going wrong

Your code so far


# 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 odd_digits in card_number:
    print(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()

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36

Challenge Information:

Learn How to Work with Numbers and Strings by Implementing the Luhn Algorithm - Step 19

2

You want to iterate over odd_digits (so it should be placed after the in keyword)
And you need to use a new variable as the loop variable (you are currently using odd_digits).
Lastly, the loop should be inside the function body (you need to indent the loop), because odd_digits is not available outside the function.