def _validate(self, value):
        check = [3, 2, 7, 6, 5, 4, 3, 2, 1, 0]
        return sum([int(value[i]) * check[i] for i in range(10)]) % 11 == 0
Takes in the value in canonical form and checks the verifier digit. The
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/django/contrib/localflavor/is_/forms.py/ISIdNumberField._validate