proxy _callmethod(name [args [kwargs]]calls the method name on the proxy' referent object name is string with the method nameargs is tuple containing positional argumentsand kwargs is dictionary of keyword arguments the method name must be explicitly exposed normally this is done by including the name in the _exposed_ class attribute of the proxy class proxy _getvalue(returns copy of the referent in the caller if this call is made in different processthe referent object is pickledsent to the callerand is unpickled an exception is raised if the referent can' be pickled connections programs that use the multiprocessing module can perform message passing with other processes running on the same machine or with processes located on remote systems this can be useful if you want to take program written to work on single system and expand it work on computing cluster the multiprocessing connection submodule has functions and classes for this purposeconnections client(address [family [authenticate [authkey]]]connects to another process which must already be listening at address address address is tuple (hostname portrepresenting network addressa file name representing unix domain socketor string of the form '\\servername\pipe\pipenamerepresenting windows named pipe on remote system servername (use servername of for the local machinefamily is string representing the addess format and is typically one of 'af_inet''af_unix'or 'af_pipeif omittedthe family is inferred from the format of address authentication is boolean flag that specifies whether digest authentication is to be used authkey is string containing the authentication key if omittedthen the value of current_process(authkey is used the return value from this function is connection objectwhich was previously described in the pipes section of "interprocess communication connections listener([address [family [backlog [authenticate [authkey]]]]] class that implements server for listening for and handling connections made by the client(function the addressfamilyauthenticateand authkey arguments have the same meaning as for client(backlog is an integer corresponding to the value passed to the listen(method of sockets if the address parameter specifies network connection by defaultbacklog is if address is omittedthen default address is chosen if both address and family are omittedthen the fastest available communications scheme on the local system is chosen an instance of listener supports the following methods and attributess accept(accepts new connection and returns connection object raises authenticationerror if authentication fails address the address that the listener is using lib fl ff