def get_db_prep_value(self, value, connection, prepared=False):
        if not prepared:
            value = self.get_prep_value(value)
        return value
Write a PNG image to the output file.
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.2/django/db/models/fields/__init__.py/Field.get_db_prep_value--crossover with--dataset/ETHPy150Open ardekantur/pyglet/pyglet/image/codecs/pypng.py/Writer.write