code: def delete(self):
          
          if self._new:
              raise Exception("This is a new object, %s not in data, \
  indicating this entry isn't stored." % self.primaryKey)
  
          r.table(self.table).get(self._data[self.primaryKey]) \
              .delete(durability=self.durability).run(self._conn)
          return True
docs: Deletes the current instance. This assumes that we know what we're
          doing, and have a primary key in our data already. If this is a new
          instance, then we'll let the user know with an Exception