Advanced Python Programming

The Pool class

In the multiprocessing module, the Pool class is mainly used to implement a pool of processes, each of which will carry out tasks submitted to a Pool object. Generally, the Pool class is more convenient than the Process class, especially if the results returned from your concurrent application should be ordered.

Specifically, we have seen that the order of completion for different items in a list is considerably likely to change when put through a function concurrently as the program runs over and over again. This leads to difficulty when reordering the outputs of the program with respect to the order of the inputs that produced them. One possible solution to this is to create tuples of processes and their outputs, and to sort ...