def to_index(self):
        return self.to_coord().to_index()
Calculates a security hash for the given Form instance.
dataset/ETHPy150Open pydata/xarray/xarray/core/variable.py/Variable.to_index--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/django/contrib/formtools/utils.py/security_hash