Quentin Pradet
@quentin.pradet.me
I like maintaining things: the Elasticsearch Python clients by day, urllib3 and trustme by night. I write about #Python, HTTP, async/await, open source and performance! he/him
Pinned
Quentin Pradet
@quentin.pradet.me
· Jul 29
Building great SDKs
A guide to creating SDKs that devs – and LLMs – will find a breeze to use, plus an overview of modern approaches for building and maintaining SDKs. By veteran SDK engineer, Quentin Pradet
open.substack.com
I wrote this to share everything I know about building great SDKs! open.substack.com/pub/pragmati...
Reposted by Quentin Pradet
@sethmlarson.dev and I went through months of intense, complex work to climb a steep and slippery learning curve, only to be stopped short at the very end by a hard ethical line we couldn't cross—it was gut-wrenching.
I'm proud of what we did and I'm proud of what we didn't do.
I'm proud of what we did and I'm proud of what we didn't do.
TLDR; The PSF has made the decision to put our community and our shared diversity, equity, and inclusion values ahead of seeking $1.5M in new revenue. Please read and share. pyfound.blogspot.com/2025/10/NSF-...
🧵
🧵
The official home of the Python Programming Language
www.python.org
October 27, 2025 at 3:00 PM
@sethmlarson.dev and I went through months of intense, complex work to climb a steep and slippery learning curve, only to be stopped short at the very end by a hard ethical line we couldn't cross—it was gut-wrenching.
I'm proud of what we did and I'm proud of what we didn't do.
I'm proud of what we did and I'm proud of what we didn't do.
Reposted by Quentin Pradet
This post was 5 years in the making, @shazow.net and I made a bet about whether "six", the Python 2/3 compatibility shim, would still be a popular package in 2025:
sethmlarson.dev/winning-a-be...
sethmlarson.dev/winning-a-be...
Winning a bet about “six”, the Python 2 compatibility shim
Exactly five years ago today Andrey Petrov and I made a bet about whether
“six”, the compatibility shim for Python 2 and 3 APIs, would
still be in the top 20 daily downloads on PyPI. I said it woul...
sethmlarson.dev
October 1, 2025 at 1:26 PM
This post was 5 years in the making, @shazow.net and I made a bet about whether "six", the Python 2/3 compatibility shim, would still be a popular package in 2025:
sethmlarson.dev/winning-a-be...
sethmlarson.dev/winning-a-be...
Reposted by Quentin Pradet
Our Python doc is officially out in the wild! 🐍
Thanks to everyone who joined the premiere 🙌 such a good vibe.
Here’s the link so you can watch it on repeat youtu.be/GfH4QL4VqJ0
Thanks to everyone who joined the premiere 🙌 such a good vibe.
Here’s the link so you can watch it on repeat youtu.be/GfH4QL4VqJ0
Python: The Documentary | An origin story
YouTube video by CultRepo (formerly Honeypot)
youtu.be
August 29, 2025 at 12:00 AM
Our Python doc is officially out in the wild! 🐍
Thanks to everyone who joined the premiere 🙌 such a good vibe.
Here’s the link so you can watch it on repeat youtu.be/GfH4QL4VqJ0
Thanks to everyone who joined the premiere 🙌 such a good vibe.
Here’s the link so you can watch it on repeat youtu.be/GfH4QL4VqJ0
Since PyCon Africa is affected by the PSF Grants pause, I am hopeful that donation tickets can make a difference.
🎟️ Donation Ticket Now Available!
Support PyCon Africa 2025 by purchasing a Donation Ticket, attend the conference and help us bring more developers from across Africa.
👉 za.pycon.org/tickets
@python.org @za.pycon.org
Support PyCon Africa 2025 by purchasing a Donation Ticket, attend the conference and help us bring more developers from across Africa.
👉 za.pycon.org/tickets
@python.org @za.pycon.org
August 12, 2025 at 9:32 AM
Since PyCon Africa is affected by the PSF Grants pause, I am hopeful that donation tickets can make a difference.
Disqus showing ads on my blog was the last straw for me. I thought about storing comments on GitHub with utterances/giscus, but ended up on Commento. They have a generous free tier, don't track their users, and are trusted by Mozilla. Switching took only 10 minutes!
commento.io
commento.io
Commento
Add comments to your website with Commento. It's fast, modern, and privacy-focused.
commento.io
August 5, 2025 at 10:57 AM
Disqus showing ads on my blog was the last straw for me. I thought about storing comments on GitHub with utterances/giscus, but ended up on Commento. They have a generous free tier, don't track their users, and are trusted by Mozilla. Switching took only 10 minutes!
commento.io
commento.io
I wrote this to share everything I know about building great SDKs! open.substack.com/pub/pragmati...
Building great SDKs
A guide to creating SDKs that devs – and LLMs – will find a breeze to use, plus an overview of modern approaches for building and maintaining SDKs. By veteran SDK engineer, Quentin Pradet
open.substack.com
July 29, 2025 at 3:22 PM
I wrote this to share everything I know about building great SDKs! open.substack.com/pub/pragmati...
Exciting! Free-Threading builds are here to stay. The adoption has been incredibly fast so far.
(urllib3 works with free-threading, but still need cryptography to add support before we can test it in CI.)
(urllib3 works with free-threading, but still need cryptography to add support before we can test it in CI.)
The Python Steering Council is pleased to announce that the Free-Threading project is no longer considered experimental!
discuss.python.org/t/pep-779-cr...
discuss.python.org/t/pep-779-cr...
PEP 779: Criteria for supported status for free-threaded Python
Hi Thomas, The Steering Council (SC) approves PEP 779, with the effect of removing the “experimental” tag from the free-threaded build of Python 3.14. Along with this, the SC considers the following...
discuss.python.org
June 16, 2025 at 4:17 AM
Exciting! Free-Threading builds are here to stay. The adoption has been incredibly fast so far.
(urllib3 works with free-threading, but still need cryptography to add support before we can test it in CI.)
(urllib3 works with free-threading, but still need cryptography to add support before we can test it in CI.)
This talk is incredible. In 30 minutes, a binary search implementation is sped up by 25x using profiling tools, including L1 cache and pipeline stall analysis. While the tools are Apple-specific, the concepts are general and apply everywhere.
developer.apple.com/videos/play/...
developer.apple.com/videos/play/...
Optimize CPU performance with Instruments - WWDC25 - Videos - Apple Developer
Learn how to optimize your app for Apple silicon with two new hardware-assisted tools in Instruments. We'll start by covering how to...
developer.apple.com
June 12, 2025 at 5:44 PM
This talk is incredible. In 30 minutes, a binary search implementation is sped up by 25x using profiling tools, including L1 cache and pipeline stall analysis. While the tools are Apple-specific, the concepts are general and apply everywhere.
developer.apple.com/videos/play/...
developer.apple.com/videos/play/...
In the past nine months, three companies (Speakeasy, Stainless, and Fern) have collectively raised $49M to bring SDK and docs generation to everyone. Why now? I have no idea. After all, this has nothing to do with AI, and OpenAPI Generator has been popular for years.
June 9, 2025 at 7:42 PM
In the past nine months, three companies (Speakeasy, Stainless, and Fern) have collectively raised $49M to bring SDK and docs generation to everyone. Why now? I have no idea. After all, this has nothing to do with AI, and OpenAPI Generator has been popular for years.
It looks like mapping the new syntax to the Elasticsearch DSL, which natively supports nested queries and boolean operators, was the easy part.
Elasticsearch has lots of features, yes, but it is to support advanced usages like this one!
Elasticsearch has lots of features, yes, but it is to support advanced usages like this one!
Nice clear explanation of how GitHub roll out new implementations of features out that get 2,000 queries a second - including dark-shipping to 1% of users where the new implementation is invisibly compared with the production one via a background job
We rebuilt GitHub Issues search to make it faster, more flexible, and now powerful with nested queries and boolean operators! 🔎
Take a look at the engineering behind this revamp and then try out the advanced search syntax for yourself to find exactly what you need. ⬇️
Take a look at the engineering behind this revamp and then try out the advanced search syntax for yourself to find exactly what you need. ⬇️
May 26, 2025 at 2:29 AM
It looks like mapping the new syntax to the Elasticsearch DSL, which natively supports nested queries and boolean operators, was the easy part.
Elasticsearch has lots of features, yes, but it is to support advanced usages like this one!
Elasticsearch has lots of features, yes, but it is to support advanced usages like this one!
OpenAPI is incredibly popular and useful, but it is also flawed as a general-purpose API description tool. We hit many issues when using it to describe Elasticsearch APIs.
May 25, 2025 at 6:32 PM
OpenAPI is incredibly popular and useful, but it is also flawed as a general-purpose API description tool. We hit many issues when using it to describe Elasticsearch APIs.
AGPL continues to get more popular as companies want the
open source label for their product! Elastic did the same thing last year.
open source label for their product! Elastic did the same thing last year.
Redis is open source again: antirez.com/news/151
May 1, 2025 at 5:13 PM
AGPL continues to get more popular as companies want the
open source label for their product! Elastic did the same thing last year.
open source label for their product! Elastic did the same thing last year.
Reposted by Quentin Pradet
Reposted by Quentin Pradet
Thank you @americanexpress.bsky.social for sponsoring urllib3 and helping improve critical Python internet infrastructure.
I know it takes a lot of activation energy for a large company to sponsor an amount like this, so I extra appreciate whoever did the leg work on this. 🙏
I know it takes a lot of activation energy for a large company to sponsor an amount like this, so I extra appreciate whoever did the leg work on this. 🙏
April 14, 2025 at 11:07 PM
Thank you @americanexpress.bsky.social for sponsoring urllib3 and helping improve critical Python internet infrastructure.
I know it takes a lot of activation energy for a large company to sponsor an amount like this, so I extra appreciate whoever did the leg work on this. 🙏
I know it takes a lot of activation energy for a large company to sponsor an amount like this, so I extra appreciate whoever did the leg work on this. 🙏
Reposted by Quentin Pradet
Elastic is now on BlueSky! Follow us here for the latest updates on all things search, observability, security and more.
February 18, 2025 at 4:00 PM
Elastic is now on BlueSky! Follow us here for the latest updates on all things search, observability, security and more.
Reposted by Quentin Pradet
PEP 751 has been accepted! peps.python.org/pep-0751/
This means #Python now has a lock file standard that can act as an export target for tools that can create some sort of lock file. And for some tools the format can act as their primary lock file format as well instead of some proprietary format.
This means #Python now has a lock file standard that can act as an export target for tools that can create some sort of lock file. And for some tools the format can act as their primary lock file format as well instead of some proprietary format.
PEP 751 – A file format to record Python dependencies for installation reproducibility | peps.python.org
This PEP proposes a new file format for specifying dependencies to enable reproducible installation in a Python environment. The format is designed to be human-readable and machine-generated. Installe...
peps.python.org
March 31, 2025 at 9:28 PM
PEP 751 has been accepted! peps.python.org/pep-0751/
This means #Python now has a lock file standard that can act as an export target for tools that can create some sort of lock file. And for some tools the format can act as their primary lock file format as well instead of some proprietary format.
This means #Python now has a lock file standard that can act as an export target for tools that can create some sort of lock file. And for some tools the format can act as their primary lock file format as well instead of some proprietary format.
Reposted by Quentin Pradet
Now I'm looking for someone with 7+ years of FastAPI experience 🤭
Jokes aside, I'm doing interesting new things and want some extra help full-time 🚀
I'm looking for tons of skills and knowledge in SRE / DevOps / Platform / Cloud / name-it ...and of course, FastAPI
Email jobs@fastapilabs.com
Jokes aside, I'm doing interesting new things and want some extra help full-time 🚀
I'm looking for tons of skills and knowledge in SRE / DevOps / Platform / Cloud / name-it ...and of course, FastAPI
Email jobs@fastapilabs.com
March 11, 2025 at 11:56 PM
Now I'm looking for someone with 7+ years of FastAPI experience 🤭
Jokes aside, I'm doing interesting new things and want some extra help full-time 🚀
I'm looking for tons of skills and knowledge in SRE / DevOps / Platform / Cloud / name-it ...and of course, FastAPI
Email jobs@fastapilabs.com
Jokes aside, I'm doing interesting new things and want some extra help full-time 🚀
I'm looking for tons of skills and knowledge in SRE / DevOps / Platform / Cloud / name-it ...and of course, FastAPI
Email jobs@fastapilabs.com
Reposted by Quentin Pradet
It's here! The 2024 annual report for #urllib3, a relatively quiet year that included work on HTTP/2 and Web Assembly (WASM). $3,300 worth of bounty issues exist today!
quentin.pradet.me/blog/urllib3...
quentin.pradet.me/blog/urllib3...
urllib3 in 2024
quentin.pradet.me
January 22, 2025 at 3:54 PM
It's here! The 2024 annual report for #urllib3, a relatively quiet year that included work on HTTP/2 and Web Assembly (WASM). $3,300 worth of bounty issues exist today!
quentin.pradet.me/blog/urllib3...
quentin.pradet.me/blog/urllib3...
Reposted by Quentin Pradet
#Git mini tip:
Use '-' to refer to the previously checked-out branch with 'git switch' and 'git checkout'. It’s great for returning to a feature branch after pulling the main or toggling back and forth to compare.
Use '-' to refer to the previously checked-out branch with 'git switch' and 'git checkout'. It’s great for returning to a feature branch after pulling the main or toggling back and forth to compare.
January 19, 2025 at 8:25 AM
#Git mini tip:
Use '-' to refer to the previously checked-out branch with 'git switch' and 'git checkout'. It’s great for returning to a feature branch after pulling the main or toggling back and forth to compare.
Use '-' to refer to the previously checked-out branch with 'git switch' and 'git checkout'. It’s great for returning to a feature branch after pulling the main or toggling back and forth to compare.
Tidelift, @microsoft.com, LaunchDarkly, @sentry.io, @sourcegraph.com, Canva, and @codecov.bsky.social all supported urllib3 in 2024. Thank you!
January 7, 2025 at 8:30 PM
Tidelift, @microsoft.com, LaunchDarkly, @sentry.io, @sourcegraph.com, Canva, and @codecov.bsky.social all supported urllib3 in 2024. Thank you!
10 years ago, as part of my PhD, I launched a small PHP 5 application online. It's still up! Now using PHP 8. I intend to keep it online for a few more decades. Cool URIs don't change.
Part of the trick is @alwaysdata.bsky.social, my hosting provider, which handles database and system upgrades.
Part of the trick is @alwaysdata.bsky.social, my hosting provider, which handles database and system upgrades.
January 4, 2025 at 5:24 AM
10 years ago, as part of my PhD, I launched a small PHP 5 application online. It's still up! Now using PHP 8. I intend to keep it online for a few more decades. Cool URIs don't change.
Part of the trick is @alwaysdata.bsky.social, my hosting provider, which handles database and system upgrades.
Part of the trick is @alwaysdata.bsky.social, my hosting provider, which handles database and system upgrades.
📦 urllib3 2.3.0 is now available! It supports the WebAssembly JSPI API (enabling experimental Node.js support) and adds `HTTPResponse.shutdown()` (thanks to LaunchDarkly for sponsoring this feature).
github.com/urllib3/urll...
Note that we're still raising funds for full HTTP/2 support!
github.com/urllib3/urll...
Note that we're still raising funds for full HTTP/2 support!
Release 2.3.0 · urllib3/urllib3
🚀 urllib3 is fundraising for HTTP/2 support
urllib3 is raising ~$40,000 USD to release HTTP/2 support and ensure long-term sustainable maintenance of the project after a sharp decline in financial ...
github.com
December 22, 2024 at 8:01 AM
📦 urllib3 2.3.0 is now available! It supports the WebAssembly JSPI API (enabling experimental Node.js support) and adds `HTTPResponse.shutdown()` (thanks to LaunchDarkly for sponsoring this feature).
github.com/urllib3/urll...
Note that we're still raising funds for full HTTP/2 support!
github.com/urllib3/urll...
Note that we're still raising funds for full HTTP/2 support!
@gergely.pragmaticengineer.com has this impressive page listing early trends he identified: blog.pragmaticengineer.com/early-trends/.
Here's one more: GenAI tools are heavily subsidized (newsletter.pragmaticengineer.com/p/ide-that-s...), so we'll see more expensive subscriptions like ChatGPT Pro.
Here's one more: GenAI tools are heavily subsidized (newsletter.pragmaticengineer.com/p/ide-that-s...), so we'll see more expensive subscriptions like ChatGPT Pro.
December 6, 2024 at 12:55 PM
@gergely.pragmaticengineer.com has this impressive page listing early trends he identified: blog.pragmaticengineer.com/early-trends/.
Here's one more: GenAI tools are heavily subsidized (newsletter.pragmaticengineer.com/p/ide-that-s...), so we'll see more expensive subscriptions like ChatGPT Pro.
Here's one more: GenAI tools are heavily subsidized (newsletter.pragmaticengineer.com/p/ide-that-s...), so we'll see more expensive subscriptions like ChatGPT Pro.
What this also means is that urllib3 works great with free-threaded Python! 🎉
I am sure it will expose some subtle concurrency bugs that exist already. But before we can have CI, we need cryptography wheels as we use it to generate test certificates.
I am sure it will expose some subtle concurrency bugs that exist already. But before we can have CI, we need cryptography wheels as we use it to generate test certificates.
📣 @quentin.pradet.me wrote 'Does the #Elasticsearch #Python client works with free-threaded Python (no-GIL)?' for the @elastic #AdventCalendar ▶️ https://discuss.elastic.co/t/370392. 🎅🏼🎄🎁
December 4, 2024 at 4:25 PM
What this also means is that urllib3 works great with free-threaded Python! 🎉
I am sure it will expose some subtle concurrency bugs that exist already. But before we can have CI, we need cryptography wheels as we use it to generate test certificates.
I am sure it will expose some subtle concurrency bugs that exist already. But before we can have CI, we need cryptography wheels as we use it to generate test certificates.
Reposted by Quentin Pradet
📣 @quentin.pradet.me wrote 'Does the #Elasticsearch #Python client works with free-threaded Python (no-GIL)?' for the @elastic #AdventCalendar ▶️ https://discuss.elastic.co/t/370392. 🎅🏼🎄🎁
December 4, 2024 at 8:15 AM
📣 @quentin.pradet.me wrote 'Does the #Elasticsearch #Python client works with free-threaded Python (no-GIL)?' for the @elastic #AdventCalendar ▶️ https://discuss.elastic.co/t/370392. 🎅🏼🎄🎁