def lookup_cast(self, lookup_type):
        return "%s"
Serialize a dataframe.
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/Django-1.6.10/django/db/backends/__init__.py/BaseDatabaseOperations.lookup_cast--crossover with--dataset/ETHPy150Open Azure/Azure-MachineLearning-ClientLibrary-Python/azureml/serialization.py/serialize_dataframe