[Python-ideas] Concurrency Modules

Sven R. Kunze srkunze at mail.de
Fri Jul 10 22:45:26 CEST 2015


That'll be great, Nick. I look forward to your proposal.

Alongside with you proposal, there might be capable guys who would like 
to contribute on the questions I raised in my initial mail on this list. 
This also might help Nick to hammer out a good proposal.

On 10.07.2015 09:18, Nick Coghlan wrote:
> On 10 July 2015 at 12:09, Chris Angelico <rosuav at gmail.com> wrote:
>> On Fri, Jul 10, 2015 at 8:53 AM, Sven R. Kunze <srkunze at mail.de> wrote:
>>> After discussing the whole topic and reading it up further, it became clear
>>> to me what's actually missing in Python. That is a definitive guide of
>>> why/when a certain concurrency module is supposed to be used
>> I'm not sure how easy the decisions will be in all cases, but
>> certainly some broad guidelines would be awesome. (The exact analysis
>> of "when should I use threads and when should I use processes" is a
>> big enough one that there've been a few million blog posts on the
>> subject, and I doubt that asyncio will shrink that.) A basic summary
>> would be hugely helpful. "Here's four similar modules, and why they
>> all exist in the standard library."
> Q: Why are there four different modules
> A: Because they solve different problems
> Q: What are those problems?
> A: How long have you got?
>
> Choosing an appropriate concurrency model for a problem is one of the
> hardest tasks in software architecture design. The only way to make it
> appear simple is to focus in on a specific class of problems where
> there *is* a single clearly superior answer for that problem domain :)
>
> That said, I think there may be a way to make the boundary between
> synchronous and asynchronous execution easier to conceptualise, so
> I'll put up a thread about that.
>
> Cheers,
> Nick.
>



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