INT_TO_CPF_WITH_DIGITS.py

# Based on the description found at https://dicasdeprogramacao.com.br/algoritmo-para-validar-cpf/
def get_cpf_mod_11_digit(digits):
    weights = range(len(digits) + 1, 1, -1)
    weighted = [digit * weight for digit, weight in zip(digits, weights)]
    weighted_sum = sum(weighted)
    extra_digit = weighted_sum * 10 % 11 % 10
    return extra_digit

def int_to_cpf_with_digits(num):
    assert num < 1000000000
    digits = [int(digit) for digit in f'{num:09d}']

    digit1 = get_cpf_mod_11_digit(digits)
    digits.append(digit1)

    digit2 = get_cpf_mod_11_digit(digits)
    digits.append(digit2)

    digits_str = "".join(str(digit) for digit in digits)
    return digits_str

def add_cpf_mask(digits_str):
    return f'{digits_str[:3]}.{digits_str[3:6]}.{digits_str[6:9]}-{digits_str[9:]}'

print(add_cpf_mask(int_to_cpf_with_digits(529982247)))