HTTPX Tutorial - A next-generation HTTP client for Python

In this Python Tutorial we learn about HTTPX, a modern HTTP client for Python with async support.
Resources:
www.python-httpx.org/
www.twilio.com/blog/asynchron...
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#Python
Timeline:
00:00 Introduction
00:47 Installation & Features
02:25 Basic Usage
03:55 Advanced Usage with Client
05:27 Async API
06:20 Web App Testing
07:33 Speed Tests
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[@patloeber]

What's your favorite HTTP library in Python?

[@franciskatende1566]

httpx

[@abdultheseekerofknowledge4453]

requests

[@thesupercoach]

aiohttp

[@0xN1nja]

requests

[@shanecaler1167]

Aiohttp because you can change proxies per request in a client rather than having to set the proxy at the time of creating the client. Httpx would be the better option if they had that one feature

[@TimL_]

This was brilliant, the more involved topic, the comparisons, discussing correct practices, everything! Keep it up!

[@uvle-ts8bi]

Thankx for breaking it down.. great tutorial for beginners

[@cexploreful]

Thx Python Engineer for making High Quality Videos!

[@theeox]

It's funny I recently ran into domaintools switching from requests to httpx and didn't know why. Thanks for the run down!

[@ermalgashimramori]

Great content, looking forward for more.

[@magno5157]

I love Python! ... the simplicity of Pythonic ethos reverberates through even 3rd party Python modules

[@Strikeviolet]

I used this in our project… best library for async and sync requests

[@prateeksarangi9187]

Thanks mate !! Great one

[@daynetran6697]

This is a great video that came at the right time! I was working with an API for the past week and the part of the pipeline that took the longest was the APi request through the requests library. Now I'm going to implement this HTTTPX client and also try to work in the Async feature! Thank you! You're awesome!

[@vishalmatam]

Brilliant video!!

[@chizzlemo3094]

GREAT CONTENT, THANK YOU!

[@JuanDuran85]

Excellent. Thanks.

[@anthonyaouad4190]

Small nitpick, can you please use time.perf_counter() instead of time.time() since a lot of beginners watch your videos and it's the better function

[@cobyiv]

Why is it better?

[@bongjunjang5683]

@@cobyiv because perf_counter uses cpu clocks to measure the difference of two function calls, while time.time returns the system time, which is subject to changes by the operating system.

[@bongjunjang5683]

@@cobyiv the system time, also called as ‘real world time’, is always subject to changes because your operating system periodically tries to calibrate the clock with clock synchronization protocol. You should not use system time to measure the difference of two time points because the time measured latter can be smaller than the time measured earlier due to these changes.

[@anthonyaouad4190]

@@cobyiv check out pep418 peps.python.org/pep-0418/#rationale time.perf_counter() has the highest resolution for time deltas and is the one that should be used.

[@bytesizedfeed]

Could you instead use time.process_time()?

[@shaheerzaman620]

Very helpful!

[@ChrisHalden007]

Interesting. Thanks

[@JoshBecigneul]

Any thoughts on whether additional code would be needed to handle a server's responses such as HTTP rate-limits?

[@fredieeevlogs7077]

wow thanks for the tip

[@kosmonautofficial296]

Great video thanks! Now is this also able to handle well in a multiprocess async fashion? I am looking into aiomultuprocess and not sure if it would be better to run this over aiohttp.

[@TheZekei]

I was trying to use this, but you can't pass context to event handlers. This means, for instance, that a response handler only knows the response, but it has no knowledge of what the request was. Handlers are only assigned at the client level (no per-request handlers). So to get different handling for each request, you need a new client. This breaks connection pooling. Ultimately, I went with aiohttp, as it allows passing context per request. Hopefully they add this feature to httpx.

[@tusharsnn]

have you tried http2 for making request ? what was the performance difference between http 1.1 vs 2 ? I think requests does not support h2 but httpx does.

[@Diablerick]

Nice.

[@michak.6325]

Are there benefits compared to aiohttp? Performance should be comparable, but I'm curious if there is more... probably on testing flask / fastAPI as already mentioned?

[@ivan2885]

so i think, as a HTTP client the bast solution for now is httpx, because AIOHTTP provides httpserver and httpclient as well.

[@Assxz]

aiohttp is faster than async httpx, but need more code to write and less intuitive (like requests library). and httpx supports http/2 which is faster

[@AiF0]

Well what is the difference between it and the requests library?

[@toosafelol]

httpx is very good library. amazing asyncio support. at my job we have replaced all httprequests in our code base with this. we used aiohttp and requests in the past.

[@arthurdujardin2877]

What is the VS code theme used ? I really like it !

[@motaseamyousef7668]

Hi, thanks for all useful info Could you please make video list for your shorts videos

[@markjones9180]

What theme do you use in VS code?

[@techshareurdu3948]

I am new to your channel

[@Caedin8]

It would have been great if you verified that all the 150 Pokemon were successfully gathered after each time trial. We are just trusting that the outcome of the 0.57 second async gather is equivalent to the 7 second synchronous gathering of Pokemon details. I believe you, but I am skeptical and an extra 2 or 3 seconds in the video to print the contents of the lists after would have been appreciated! Thanks

[@holthuizenoemoet591]

I always wondered if something like this would work to build backend webframework with

[@Lucifer-xk9de]

nice demo, the requests does not support asyncio, so there is aiohttp can help. now, we have another library which much convenient than aiohttp. the httpx have the same style as requests..thanks !

[@stevanmeandzija]

Do you know why memory leak is happening when using in fastapi on linux?

[@abdoemad3952]

can you build a desktop app. determining the area of any engineering shapes like rectangle ,..... .

[@nicenaija9952]

How well does this intergrate with Django?

[@aminramazanifar9743]

Can you please give a lecture about 'with' ?

[@techshareurdu3948]

Can you please make a video on Aws Cloud Front How can I Use This http module with Python

[@bigdaddy5303]

So they combined requests with aiohttp? Don't think I'm going to bother changing my code to just have a single import.

[@JusticeNDOU]

try using timeit to time method execution, python time library is not meant to time method execution

[@ch4sethe5un]

But can't you use requests in asyncio via to_thread?

[@hicoop]

Looks cool but not enough features to switch from requests

[@Medx111]

Make a video about socket

[@commerceclassesbygoyalinst8373]

How Can i Use Place Method with Frames in Tkinter ?

[@ehsankabiri8912]

Hope some day, httpx supports (Async+Socks5 proxy)

[@vraymond2048]

I'm pretty sure there is ways to archive similiar result with request module and threading.

[@angeloj.willems4362]

That's the method I currently use. But this looks to be faster.

[@lucianofeder5422]

And using async you dont need more threads to just wait requests. You can take advantage of a single thread on those kinda of tasks.

[@pritamsarkar3371]

the last example sometimes is giving "RuntimeError: Event loop is closed" or "httpx.ConnectTimeout" but sometimes it is executing properly, I am using python 3.8. , windows 10,, can you please explain what is happening, and what is the solution?

[@pritamsarkar3371]

got the solution , just need to increase the timeout param

[@yashdawani1909]

import httpx as requests. Boom no refactoring required

[@muhamedqasim5390]

Which faster httpx or aiohttp

[@maqarg]

🎯 Key Takeaways for quick navigation: 00:00 📖 Introduction to HTTPX 00:27 🚀 Getting Started with HTTPX 01:37 📜 HTTPX Features 02:58 🧪 Basic Functionality of HTTPX 04:05 🔧 Advanced Usage with HTTPX Client 05:27 ⚡ Asynchronous API in HTTPX 06:24 🧪 Testing Web Applications with HTTPX 07:33 🚀 Speed Comparisons 10:58 🎉 Conclusion

[@CodingByAmp]

wow

[@int0matar]

Why does python use single-line quotes instead of double quotes when defining a string literal? Golang always uses doubles. What could be the reason for this choice?

[@tolia5587]

You can use double or single-line quotes. For example print("text"more text"text") won't work, but print("text'more text'text") will work

[@int0matar]

@@tolia5587 I didn't mean it, it's all clear. I'm talking about the fact that it would be more logical to always use double quotes.

[@tolia5587]

@@int0matar Yeah, I agree with you

[@DenisRasulev]

Speed comparison starts at 7:33 - kzbin.info/www/bejne/p3LLZpd6hKl9a80

[@Pelmenosaurus]

99% modern internet is adult content or advertisement. I remember the times when a page opened in a browser was tens of kilobytes in size, and not like modern monstrous pages in megabytes and tens of megabytes.

[@lazyh0rse]

Whats the point? If request is working perfectly then i dont see the need for more bloat and dependencies.

[@bayy4202]

i think requests + asyncio.to_thread way simple and clean kkkk

[@DecimasoN]

I'd still choose aiohttp over httpx for pure async code

[@reinduhr]

Nice explanation Patrick, but 'Pokémon' is plural. Not 'pokemons'

[@JokeryEU]

its missing http/3

[@Ihavetoreturnsomevideotapes]

Hi Patrick ! Bateman

[@blueapollo3982]

Is this better than uvicorn?

[@vraymond2048]

Uvicorn Gunicorn is for server side hosting. In contrast, Request and httpx module is client side to request result from server.

[@TNeulaender]

It's even better than Excel

[@hansdietrich1496]

"There is no way to get async with requests" ... well there is, using greenlets and gevent.

[@MrEloska]

In the last example there is no need for `asyncio.create_task`. You can do it just adding coroutines to list `tasks.append(get_pokemon(client, url))`. What's more - to make this code more "pythonic" you can do it like: `pokemons = await asyncio.gather(*[get_pokemon(client, f"{base_pokemon_url}/{i}") for i in range(1, 151)])` :D

[@angeloj.willems4362]

True. I tried it without asyncio.ensure_future and it worked prefectly.

[@armandophilippe6203]

threading with request would have beeen as fast...

[@ordinarygg]

MEMORY LEAKS: httpx.Client and httpx.AsynClient is leaking memory when you are not passing custom ssl_context. So if you use it in production, be cautious behind tutorials in vacuum space != your real code.

[@martinhotmann7868]

Nice, but honestly for a language that itself does not perform well and therefore always was the perfect wrapper and easy to handle, this async function (the right way) looks way to complicated. They should have made it WAY more simple.

[@akzual50]

New gen? You mean someone just made helper methods deal with this for you

[@Dan-vu3vt]

You're comparing parallelism to synchronous code. This is not really a fair comparison.

[@philippelhaus]

No http/3…

[@jerrygeorge180]

.

[@Skeptic_Von_Rahm]

hell no why every new framework say "next generation framework" just stop saying just GO and do it or you RUST

[@Jkauppa]

trash expansions upon trash

[@Jkauppa]

you do thrash just for money sake, nothing useful, therefore trash

[@Jkauppa]

trash bloats around everything