415             txid = threading.currentThread().getName()

   415             txid = threading.currentThread().getName()

   416         self.__threaddata.tx = self.get_tx(txid)

   416         self.__threaddata.tx = self.get_tx(txid)

   417 

   417 

   418     @property

   418     @property

   419     def _tx(self):

   419     def _tx(self):

   420         try:

   421         try:

   421             return self.__threaddata.tx

   422             return self.__threaddata.tx

   422         except AttributeError:

   423         except AttributeError:

   423             self.set_tx()

   424             self.set_tx()

   424             return self.__threaddata.tx

   425             return self.__threaddata.tx