code: def tx_for_tx_hash(self, tx_hash):
          "Get a Tx by its hash."
          URL = self.api_domain + ("/rawtx/%s?format=hex" % b2h_rev(tx_hash))
          tx = Tx.from_hex(urlopen(URL).read().decode("utf8"))
          return tf tx_for_tx_hash(self, tx_hash):
          "Get a Tx by its hash."
          URL = self.api_domain + ("/rawtx/%s?format=hex" % b2h_rev(tx_hash))
          tx = Tx.from_hex(urlopen(URL).read().decode("utf8"))
          return tx
docs: Get a Tx by its hash.