BSN 11-proef

bsnproef.py

def bsnproef(nummer):
    """
    Checks validity of Dutch Social Security (BSN) based on '11-proef'
    :param nummer: number to be checked, can be string or int
    :return: True if passed BSN proef, False otherwise
    """
    bsnfactoren = [9, 8, 7, 6, 5, 4, 3, 2, -1]
    try:
        check = sum([int(a)*b for a, b in zip(str(nummer), bsnfactoren)]) %  11
        if check == 0:
            return True
        else:
            return False
    except:
        return False