def get_flatchoices(self, include_blank=True, blank_choice=BLANK_CHOICE_DASH):
        first_choice = include_blank and blank_choice or []
        return first_choice + list(self.flatchoices)
Returns flattened choices with a default blank choice included.
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.2/django/db/models/fields/__init__.py/Field.get_flatchoices