Tell us what’s happening:
I’m having trouble with this step. I’m not sure how I’m supposed to complete it. It’s asking me to " Within the if
statement, assign number
the result of number // 10
(integer division) plus the modulus of number
and 10
."
I’ve tried this way (below) as well as this code:
for digit in even_digits:
number = int(digit) * 2
if number <= 10:
number = number // 10 + number % 10
print(number)
It’s not showing in the explanation but I also have proper indentation for these two lines:
number = number // 10 + number % 10
print(number)
Neither codes are working.
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)
# User Editable Region
sum_of_even_digits = 0
even_digits = card_number_reversed[1::2]
for digit in even_digits:
number = int(digit) * 2
number = number // 10 + number % 10
print(number)
# 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 28