[Tutor] could someone please explain multiprocessing

[Alan Gauld]

On 03/07/2020 00:20, nathan tech wrote:

> I was wondering if someone was able to explain the multiprocessing 
> module to me.

You might try the concurrency topics in my tutorial.

http://www.alan-g.me.uk/l2p2/tutthread.htm

If you have used threading it should all make sense. Its very basic,
just an introduction to the concepts, but it should get you started.

> Hi parent, are you running?
> Yes I am.
> Great, here is a file for you.
> Thanks child, you can close now and not launch a second instance.
> okay, goodnight!
> 
> 
> So far the way I've done this is through the socket module by having the 
> first program listen on localhost, but this on some systems raises a 
> windows security error. 

I'm not sure I understand this bit. What is the "first program" (ie the
main thread?)  listening for on the socket? Surely you are not
communicating between threads via sockets? That makes no sense?

> I'm wondering how windows media player goes about it?

I have no idea. In fact I don't even know what aspect of WMP
you are referring to? What feature does it have that requires
concurrency? (I'm a Linux user who rarely uses Windows and
certainly never WMP!)

It might help us give a more comprehensive answer if you
could describe the application level requirements rather than
just the proposed solution.


-- 
Alan G
Author of the Learn to Program web site
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