| # -*- coding: utf-8 -*- | |
| def get_validation_digit(number): | |
| """ Calculates the validation digit for the given number. """ | |
| sum = 0 | |
| dvs = [4, 3, 6, 7, 8, 9, 2] | |
| number = str(number) | |
| for i in range(0, len(number)): | |
| sum = (int(number[-1 - i]) * dvs[i] + sum) % 10 | |
| return (10-sum) % 10 |