curriculum/challenges/english/blocks/learn-how-to-work-with-numbers-and-strings-by-implementing-the-luhn-algorithm/65687e069cf4e0c85b0a06b1.md
Outside of the if statement, add number to sum_of_even_digits. Also, remove the print call.
You should have sum_of_even_digits += number within the for loop.
({
test: () => {
const transformedCode = code.replace(/\r/g, "");
const for_loop = __helpers.python.getBlock("\n" + transformedCode, "for digit in even_digits");
const {block_body} = for_loop;
assert.match(block_body, /sum_of_even_digits\s*\+=\s*number/);
}
})
You should not have print(number) within the for loop.
({
test: () => {
const transformedCode = code.replace(/\r/g, "");
const verify_card_number = __helpers.python.getDef("\n" + transformedCode, "verify_card_number");
const { function_body } = verify_card_number;
const no_comments = __helpers.python.removeComments(function_body);
assert.notMatch(no_comments, /print\s*\(\s*number\s*\)/);
}
})
You should not have sum_of_even_digits += number within the if statement.
({
test: () => {
const transformedCode = code.replace(/\r/g, "");
const if_statement = __helpers.python.getBlock("\n" + transformedCode, "if number >= 10");
const {block_body} = if_statement;
assert.notMatch(block_body, /sum_of_even_digits *\+= *number/);
}
})
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)
--fcc-editable-region--
sum_of_even_digits = 0
even_digits = card_number_reversed[1::2]
for digit in even_digits:
number = int(digit) * 2
if number >= 10:
number = (number // 10) + (number % 10)
print(number)
--fcc-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()