import asyncio: Learn Python's AsyncIO #1 - The Async Ecosystem
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- Опубликовано: 16 июл 2024
- This series of videos introduces AsyncIO to Python programmers who haven't used it yet. The first episode is a high-level view on the async ecosystem. We cover:
- why you'd want to use asynchronous code at all;
- how latency drives the user experience;
- what the difference between concurrency and parallelism is;
- some of the problems you can encounter with threads, and with threads in Python in particular;
- a short story about select, the OG of async calls; and
- the history of asynchronous programming in Python that led to AsyncIO. 
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You're one of the few people on the planet who understanding the psychology of explaining things effectively. Great video.
This series is the most complete AsyncIO tutorial on RUclips. Massive thumbs up! :)
:( why it is hard
@@luxetim1541 😅
Since the moment he mentioned 'select sys call,' I didn't understand what he was saying. It's specialized knowledge about Linux and networking, which I'm not familiar with. Perhaps there should be a course that introduces async for the majority of learners, without such academic knowledge
Loving it! Especially the part about using blocking stuff in my async codebase. Sometimes it is not as convenient as it could be. Also, errors handling and debugging usually missed in such series, thanks for not skipping it!
This is very well thought out and provides context, history and answers the WHYs before taking a shortcut to ide/code editor. Highly recommended for anyone interested in understanding crucial concepts behind the asyncio implementation.
Looking forward to the rest of the episodes!
Your teaching style is not really good and not intuitive. Going through a series of PEPs and just briefly introducing them, how can viewers understand what you are saying? This is a lecture, not a movie. Viewers need to watch attentively and carefully to understand, unlike a movie where viewers can watch or not, or fast forward to another part, and viewers don't get a headache from watching a movie.
I am putting this on pause at 38:56 to comment here. I've never thought it would be so interesting to listen about all the history and the path that led to Asycnio.
Thank you.
19:58 Gilectomy -> overcoming the limitation of GIL is not easy.
23:13 the goal of asyncio -> maximize the usage of a single thread.
29:15 event loop -> Select syscall as a solution to waste of CPU or lag
Since the moment he mentioned 'select sys call,' I didn't understand what he was saying. It's specialized knowledge about Linux and networking, which I'm not familiar with. Perhaps there should be a course that introduces async for the majority of learners, without such academic knowledge
thanks a lot for the clarifications!
I wish you had (or would) create more such amazing in-depth playlists. Teachers like you make us fall in love with programming again and again. Thank you so much!!
Came here after listening to you on the Real Python Podcast. This is some amazing insight into Python's AsyncIO. Keep it up!
Congrats for this video! The most complete I`ve ever seen, specially the historic part. Knowing which concepts and early ideas participated in the creation/evolution of asyncio and its peers was great. Definetely I`ll check the rest of the series.
Explained things so well! Loved hearing the history of asyncio to contextualize it's current implementation. To say you did your homework would be an understatement! Thanks again
love it! keep doing tutorials, they are really nice
A very thorough discussion! So informative, and the speaker is excellent.
Amazing detailed introduction to the history of asyncio and so much stuff about the ecosystem of coroutine in Python, loving it and thanks!
Jestem absolutnie zachwycony twoim tłumaczeniem :D Miło słyszeć, że ktoś to tak świetnie tłumaczy - domyślam się, że nie tylko ja to mówię, ale i tak zostawiam komentarz dla zasięgu :P
Hello. Your video is awesome! I am from Brazil, I started working with AsyncIO and python a few weeks ago, and your content is being so helpful. I hope you keep doing that. Congratulations!
Great tutorial! Thank you, Lukasz for taking the time and explaining asyncio.
this is amazing work. I've bounced off a half dozen asyncio tutorials but it's finally, finally starting to click for me. rlogin was my bathtub moment - many thanks.
Thanks a lot for this video! Watched a lot of asyncio and no one had explained it as well as you did. Please keep sharing !!
Wow! This is a gem....super impressed with the depth. Love this.
I have been trying to learn AsyncIO in Python for a while now and this is by far the best (clear, concise, deep) resource I have found. Massive thanks to Lukasz and Edge DB team for arranging this!
讲的太好了，找了很久有关python asyncio相关的高级知识，现在终于看到了，谢谢你无私的分享
This is the BEST asyncio video I have watched so far! I'm bound to applaud
Great lecture series. After spending hours online and looking at asyncio implementation, I am finally starting to get it. Thank you so much!
Awesome introduction, I need to check all these PEPs and libraries, learned a lot. Thanks EdgeDB.
This is a super super good video. I didn't expect such a comprehensive take on async await.
This is so excellent! I will borrow the bartender analogy to explain concurrency from now on. Subscribed and thank you!
Łukasz, this is some very, very, very in detail history knowledge which I'm deeply grateful to you! Thanks for your time and effort. I'm going to continue on rest of the movies!
Buy this man a beer!
This explanation is the best I ever came across on the subject of asynchronous handling ❤
Mate thank you for putting these together, you’re a great teacher.
Great content, exactly what I was looking for!
OMG your explanation is one of the most comprehensive yet relaxed hence easy to understand.
Liked and subscribed!
You have an amazing channel Sir!
Amazing piece of content. Thank you so much for such fantastic quality of information. Special mention for performing the donkey from shrek's "are we there yet" !
A true masterclass. Thank you!
simple and circumstantially! Thank you!
i thought i will listen to core details in asyncio but man this is SO interesting i should watch the whole playlist! Thank you very much
Thanks for sharing your knowledge and explaining this hard to grab concepts with such elegance 👏
Very well prepared and presented. Thanks.
Łukasz big Thanks :). Your knowledge is huge and you are really good as you-tuber. I have tried this and it is no easy.
Love to see a detailed series on async
Great stuff! Love it
Learning the fundamentals of Asyncio and building an app with Starlette and EdgeDB!? This will be the best RUclips series for Python devs in the history of RUclips Videos about Python!!!
You should make more videos. Really nice examples and thoughtful.
i never thought, as someone who has been learning python since 8 weeks ago, that i would have such an intimate knowledge of a module before i ever knew how to implement it
Splendid job 🤘
Great Explanation !!
Thanks Łukasz for these videos and for the black formatter.
wow, thank you! I hope I will obtain enough knowledge to implement Asyncio in my Flask project.
Really nice explanation. Thanks
This is awesome. Thanks alot
Amazing, thank you so much! :)
wow.. awesome content! thank you
Thanks. Very interesting
When you talk about the event loop you often bring up the picture with those callbacks. It was always rather confusing to me. I finally understood what did you mean by it. Thanks
Super nice!
Wow! Thank you. I wish if you had a book about threadin in Python.
That was precious.
Crisp and detailed contents with nice presentation. :) --> and going to try edge DB
AWESOME!
Great video.. Seriously
Fellow ex. FB employee too. I worked in security. Great course to get me up to speed with this library.
really interesting tuts
Możliwe, że i ten komentarz jest dla zasięgu :P, ale w tym powiem, że też miło w końcu rozumieć skąd to wszystko się wzięło :D
Nice. Thanks.
Great Vedio!!!!!!!!!!
Very nice start to what promises to be a very interesting series.
One thing I'm not sure about: one hand you say "the GIL is what makes python fast" and you work on asyncio to make it even faster; on the other hand I see Google starting the S4TF team to push for ML to be written in Swift because "python is slow". Who is right ?
Good question! Python is both a programming language that you see in your text editor, as well as a runtime that executes your program. It is impossible to think about Python just looking at the source code without thinking how it behaves - or can behave - at runtime.
An important feature of Python is that nothing is private, everything is mutable and introspectable. Plenty of features of Python rely on this design. This puts some constraints on how fast native Python can run, for example due to very widespread usage of dictionaries, duck typing, and so on.
When we're saying that the GIL is what makes Python fast, we mean that without the GIL the particular design that CPython is an implementation of, would be less efficient without a single global interpreter lock.
Other programming languages have different sets of guarantees and features, sometimes very specifically chosen to allow better native performance. While Swift isn't particularly interesting in this space, we at EdgeDB are quite excited about Rust for systems programming. Our database server already includes Rust code for some performance-critical bits (which in the old times would typically be handled by writing a C extension).
Piekna sprawa.
Maybe it worth to cover ASGI as well before moving to Starlette, it would be consistent with the bottom to top approach you've chosen. I can't wait for the EdgeDB section though :)
Very good
I just finished the podcast on Real Python came here for more :D
Thank you for the video! I got a bit confused at about 12:45 where you explain who catches the error when adding to the dictionary and what thread propagates it. Could you please elaborate? Thanks in advance !
Just out of curiousity, how many times were you recording the part with 6 seconds sleep and adding another variable? :D
Correct me if I'm wrong. I have an example for deadlock, "You are trying to find job to gain experience, but need experiance to get a job"
It's been more than 5 months since the last video. Will you add the remaining parts or will we be left hanging midway ?
:/
Are there any articles or blogs that accompany the videos?
The video where it clicked, thanks.
Would it be as efficient as node's main loop ?
nice
Great series! when's the next video coming up?
We're uploading it right now. We'll be targeting to release at least one new episode per week.
Since the moment he mentioned 'select sys call,' I didn't understand what he was saying. It's specialized knowledge about Linux and networking, which I'm not familiar with. Perhaps there should be a course that introduces async for the majority of learners, without such academic knowledge
My doubt is, how that bartender (25:04) goes back to previous customers? please reply
what is the difference between qrequests and asyncio
Sometimes explaining just the main point is good rather than giving overwhelming information.
What causes this? --> RuntimeError: asyncio.run() cannot be called from a running event loop
Jupyter problem?
спасибо яндекс что я могу смотреть это видео на русском
но главное спасибо автору видео :)
Exactly wait I was looking for, after watching a couple of other tutorials on async(io) (around 30~45m each) I felt like they all barely touched base and put code on the screen way to fast for me to grasp all concepts.
actually, just watched this first episode and am really pleased with the content. I'm going to watch the rest tomorrow.
23:10 There's one more thing!
"Mr White, I'm gonna teach you asyncio"
hi this is a great video but if with code programming is better and more example and write your example such as senario.
god willing
It would have been most amazing python async series if only black resorted to single quotes
Dude, you even mentioned K8S and Fargate in the introductory series. I gues this is not meant for someone who is fairly new to these things huh?
I was looking for copper and found gold
consider changing ur career to instructor, everything is just well exaplined.
Who's here from real python podcast?
I feel bad for the bartender
You have lost me on bartender analogy Łukasz ;) I guess you should see what real bartenders do in a busy place!
reading off the script
until minute 31 i liked the video but than u went way too indepth into history idc about
this guy is pretty average looking I guess
Awww, that's the nicest thing anyone has ever said to me ♥️
Hi Langa, Since the moment he mentioned 'select sys call,' I didn't understand what he was saying. It's specialized knowledge about Linux and networking, which I'm not familiar with. Perhaps there should be a course that introduces async for the majority of learners, without such academic knowledge
@@llanga
Your teaching style is not really good and not intuitive. Going through a series of PEPs and just briefly introducing them, how can viewers understand what you are saying? This is a lecture, not a movie. Viewers need to watch attentively and carefully to understand, unlike a movie where viewers can watch or not, or fast forward to another part, and viewers don't get a headache from watching a movie.
@@llanga
Your teaching style is not really good and not intuitive. Going through a series of PEPs and just briefly introducing them, how can viewers understand what you are saying? This is a lecture, not a movie. Viewers need to watch attentively and carefully to understand, unlike a movie where viewers can watch or not, or fast forward to another part, and viewers don't get a headache from watching a movie.
not very useful for me....felt like you are reading from a book...maybe good for advanced python programmers..