Getting Started with asyncio and Python

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Hi All, in this tutorial we are going to be taking a look at the asyncio library and how you can use this to create concurrent, high-performance Python based applications.
We'll be covering coroutines and how you can schedule numerous coroutines within the framework.
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[@kobas8361]

Man, these series are just so AWESOME, comprehensive and as in depth as I'd wish! Great job

[@tryagain622]

RIP bro

[@gemcoin]

Great job. “It is very simple to be happy, but it is very difficult to be simple.” Tagore

[@kitgary]

I heard that asyncio is not multiprocessing, it only provides concurrency but not parallelism, am I right?

[@Pheonixrocks]

that typing speed tho, loving it

[@carnaciousG]

Shouldn't we use "asyncio.run(main())" instead of the 3 loop lines as suggested here : docs.python.org/3/library/asyncio-eventloop.html ?

[@hunterpruett5455]

Feedback: I feel like you didn't go too fast, but you didn't really explain too much about what each and every bit of code means. I came here because I am absolutely clueless about how asyncio works, and you probably understand it very well, but in your videos, I suggest overexplaining everything for us people who are learning from scratch.

[@abdulzz97]

true. thats why i dislike this video. hoping that someone will upload bout what exactly is a coroutine. i cant understand

[@arnonaf]

How can you properly integrate it with aiohttp web application listener? So when you route url to function handler, the handler itself will be generated as a non blocking task in the asyncio event loop? I made it work by making the writing the handler as a wrapper to the original function, meaning the handler now unpack the input data of the https request and adds it to a task using run_in_executor, and calling asyncio.wait. Even though it works I'm not sure if it is the right/best way, because the original blocking function had to be single threaded, if it had async def... and await in it, it just wouldn't get executed. For example if this function has a heavy process and it sends the results to another https server, I had to used requests.post, instead of aiohttp ClientSession which is async method. Also, I wan't sure where exactly I should close the loop itself, because it cannot be done in the handler.

[@tornyu]

Very nice, thanks. Next time could you please make the font bigger? It was a bit hard to read on my phone.

[@Tutorialedge]

I've started increasing the fonts on my latest videos, hopefully this is big enough! :)

[@raggedclawstarcraft6562]

@@Tutorialedge or just capture part of the screen. in this particular example the right side of the screen were mostly empty.

[@pynchia4119]

Why do you need to call ensure_future and not the coroutine directly

[@nomad27]

Thanks for this. Great tutorial + love your accent!

[@georgesmith3022]

simple and clear, thanks

[@elliottharris4526]

I ran code as above (except called sublime py file from command line) and got Runtime warning coroutine 'main' was never awaited. --- Apparently one doesn't need all the loop set up and just does asyncio.run(main()) instead. Version thing I guess.

[@xyy9xx]

Great video. but could you please tell me which extension for showing file name & file type?

[@Zzzzzzzzzzzzzzzzzzzzr]

So this slows everything to run at once as in your function or requests?

[@impossibruh6969]

Fucking hell I love your accent lol

[@ahmeterdem9312]

Do you know which part of the UK, should I move to acquire this kind of accent?

[@atxweirdo]

Great video, will there be more videos showing advanced features of async?

[@Tutorialedge]

+atxweirdo thank you! I will indeed be covering asyncio in more depth in the near future so stay tuned!

[@tron_sa]

thanks, Great Job, I could understand immediately

[@prafulkumawat]

Sorry! But which editor you are using...

[@Tutorialedge]

Visual Studio Code :)

[@ahm_8483]

What is ur theme, or/and font? thnx

[@prafulkumawat]

@@Tutorialedge thanx

[@executeOrder69]

Very helpful! Thank you! :D

[@phb17]

Hey there! Thanks for the great tutorial! I'm new to Python and I tried your code and it works like a charm, but when I replace "await asyncio.sleep(process_time)" by let's say for instance a very time consuming for loop (for i in rand(10000, 1000000)) it just run synchronously. I've tried many things and asyncio.sleep() is the only thing I can make work so far :(

[@AbhishekNigam]

Explained well!

[@zenberryone]

That was very helpful! Thanks a lot! Guys, the code is here: tutorialedge.net/python/concurrency/getting-started-with-asyncio-python/

[@abdulzz97]

what is exactly coroutine? you just teaching them expert and savvy. not us beginners. just straight coding without a simple brief (for example you explain how we beginner do things that could be turned into coroutine). so 1 dislike from me pal. sorry this just confusing for me

[@aharongina5226]

nice video, but asyncio is useless

[@princessluna3953]

This tutorial is such a pain its so small

[@EnitinEnitin]

You don't explain anything.