def corner(self):
        return tuple(self.coordinates[0][2])
A implementation independent way of checking for iterables
dataset/ETHPy150Open balanced/status.balancedpayments.com/situation/tweepy/models.py/BoundingBox.corner--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/django/utils/itercompat.py/is_iterable