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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def sendError(self, errorcode):
 """This method uses the socket passed, and uses the errorcode to compose and send an error packet."""

        log.debug("In sendError, being asked to send error %d", errorcode)
        errpkt = TftpPacketERR()
        errpkt.errorcode = errorcode
        if self.context.tidport == None:
            log.debug("Error packet received outside session. Discarding")
        else:
            self.context.sock.sendto(errpkt.encode().buffer,
                                     (self.context.host,
                                      self.context.tidport))
        self.context.last_pkt = errpkt