def local_regon_checksum(digits):
    """
    Calculates and returns a control digit for given list of digits basing on local REGON standard.
    """
    weights_for_check_digit = [2, 4, 8, 5, 0, 9, 7, 3, 6, 1, 2, 4, 8]
    check_digit = 0

    for i in range(0, 13):
        check_digit += weights_for_check_digit[i] * digits[i]

    check_digit %= 11

    if check_digit == 10:
        check_digit = 0

    return check_digit
Calculates and returns a control digit for given list of digits basing on local REGON standard.