def delete(self, key):
            if isinstance(key, dict):
                key = _serialize_hstore(key)
            return _HStoreDeleteFunction(self.expr, key)
Serializes a value to JSON and encodes it using base64.
dataset/ETHPy150Open zzzeek/sqlalchemy/lib/sqlalchemy/dialects/postgresql/hstore.py/HSTORE.Comparator.delete--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/webapp2-2.5.1/webapp2_extras/json.py/b64encode