threads and concurrency close(closes the pipe or socket being used by the listener last_accepted the address of the last client that was accepted here is an example of server program that listens for clients and implements simple remote operation (adding)from multiprocessing connection import listener serv listener(('', ),authkey=' 'while trueconn serv accept(while truetryx, conn recv(except eoferrorbreak result conn send(resultconn close(here is simple client program that connects to this server and sends some messagesfrom multiprocessing connection import client conn client(('localhost', )authkey=" "conn send(( , ) conn recv(print(rprints ' conn send(("hello","world") conn recv(print(rprints 'helloworldconn close(miscellaneous utility functions the following utility functions are also definedactive_children(returns list of process objects for all active child processes cpu_count(returns the number of cpus on the system if it can be determined current_process(returns the process object for the current process freeze_support( function that should be included as the first statement of the main program in an application that will be "frozenusing various packaging tools such as py exe this is needed to prevent runtime errors associated with launching subprocesses in frozen application lib fl ff