🔒 A question related to for loop

[sturdy sigil]

@violet timber

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[lofty scarab]

!e

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:
        print(digit)
        sum_of_odd_digits += digit
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()

[sturdy sigil]

@lofty scarab :x: Your 3.12 eval job has completed with return code 1.

001 | 2
002 | Traceback (most recent call last):
003 |   File "/home/main.py", line 16, in <module>
004 |     main()
005 |   File "/home/main.py", line 14, in main
006 |     verify_card_number(translated_card_number)
007 |   File "/home/main.py", line 8, in verify_card_number
008 |     sum_of_odd_digits += digit
009 | TypeError: unsupported operand type(s) for +=: 'int' and 'str'

[lofty scarab]

As the error says: digit is a string, and you can't add strings to ints.

[sturdy sigil]

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