write an eventloop instead of using existing asyncio evenloop [closed]

Question

Closed. This question is opinion-based. It is not currently accepting answers.

Want to improve this question? Because this question may lead to opinionated discussion, debate, and answers, it has been closed. You may edit the question if you feel you can improve it so that it requires answers that include facts and citations or a detailed explanation of the proposed solution. If edited, the question will be reviewed and might be reopened.

Closed 6 years ago.

Improve this question

Ok, so one can write a custom made eventloop over using given asyncio's eventloop (Writing an EventLoop without using asyncio)

Now the question rises is why? Why prefer writing a custom made over asyncio's eventloop?

I believe it's legacy. asyncio is new in Python standard, and was "usable" before keywords "async" and "await". For exemple, the web framework Tornado can use a non blocking API, without asyncio. But I believe today, the best practice is to use AsyncIO. — Blusky
– Blusky, Commented Dec 14, 2018 at 6:54

Mikhail Gerasimov · Accepted Answer · 2018-12-14 07:37:38Z

3

Why prefer writing a custom made over asyncio's eventloop?

Usually you invent something new if existing approach doesn't fit your needs. Or may be if you think you can do things more efficiently or conveniently.

First of all it worth noting that asyncio itself provides multiple event loop implementations. Reason for this is that they built on top of different low-level OS API an can behave differently. You can select (or write your own event loop) that fits your task best.

Sometimes people create their own event loop implementations for better performance. Good example of such case is uvloop.

Sometimes people create event loops on top of other non-asyncio event loops. For example quamash provides event loop on top of Qt. It allows to write asynchronous programs using PyQt.

answered Dec 14, 2018 at 7:37

Mikhail Gerasimov

40.1k20 gold badges126 silver badges172 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

user4815162342 Over a year ago

While on the topic of alternative event loops, you might want to also mention curio and trio, event loops written without the goal of asyncio compatibility and differing from it in both philosophy and implementation.

Collectives™ on Stack Overflow

write an eventloop instead of using existing asyncio evenloop [closed]

1 Answer 1

1 Comment

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Linked

Related