def get(self, key, default=None):
        "Returns the default value if the requested data doesn't exist"
        try:
            val = self[key]
        except __HOLE__:
            return default
        if val == []:
            return default
        return val
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-0.96/django/utils/datastructures.py/MultiValueDict.get