ISBN-13 Validator w/ Check Digit Validation (Python)

isbn13validator.py

import re

test_good_isbns = ["978-0-596-52068-7", "9780596520687"]

isbn_13_pattern = re.compile(r"^[0-9]{3}[\s-]?[0-9][\s-]?[0-9]{3}[\s-]?[0-9]{5}[\s-]?[0-9]$")


class ISBN13:
    def __init__(self, isbn_in):
        self.isbn = isbn_in

    def validate(self):
        return isbn_13_pattern.match(self.isbn) is not None and sum(
            [*map(lambda char_w_i: int(char_w_i[1]) * 3 if char_w_i[0] % 2 == 0 else int(char_w_i[1]),
                  enumerate(re.sub(r"-|\s", "", self.isbn[:-1])))]) % 10 == int(self.isbn[-1])


if __name__ == "__main__":
    for code in test_good_isbns:
        isbn = ISBN13(code)
        print(isbn.validate())