def encode(self, password, salt):
        raise NotImplementedError()
Non-images raise an exception.
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/django/contrib/auth/hashers.py/BasePasswordHasher.encode--crossover with--dataset/ETHPy150Open SmileyChris/easy-thumbnails/easy_thumbnails/tests/test_source_generators.py/PilImageTest.test_not_image