code: def send_transaction(self, tx, relay=True):
          
          return self._backend.send_transaction(tx.blob, relay=relay)
docs: Sends a transaction generated by a :class:`Wallet <monero.wallet.Wallet>`.
  
          :param tx: :class:`Transaction <monero.transaction.Transaction>`
          :param relay: whether to relay the transaction to peers. If `False`, the daemon will have
                  to mine the transaction itself in order to have it included in the blockchain.