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

### Tell us what’s happening:

Describe your issue in detail here.
I don’t know what I am doing wrong

``````
# 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

You appear to have created this post without editing the template. Please edit your post to Tell us what’s happening in your own words.

Hello Tarzan,

You’re supposed to remove the print call, not change the other print call.
I would reset the step, then properly remove the `print` call for `sum_of_odd_digits`.

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