def delete(self, key):
            if isinstance(key, dict):
                key = _serialize_hstore(key)
            return _HStoreDeleteFunction(self.expr, key)
HStore expression.  Returns the contents of this hstore with the
dataset/ETHPy150Open zzzeek/sqlalchemy/lib/sqlalchemy/dialects/postgresql/hstore.py/HSTORE.Comparator.delete