Sebastián Ramírez
@tiangolo
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Creator of @FastAPI, Typer, SQLModel, Asyncer, etc. 🚀 From 🇨🇴 in 🇩🇪 . Open Source, APIs, and tools for data/ML. 🤖
Berlin, Germany
Joined August 2009
I saw a job post the other day. 👔. It required 4+ years of experience in FastAPI. 🤦. I couldn't apply as I only have 1.5+ years of experience since I created that thing. 😅. Maybe it's time to re-evaluate that "years of experience = skill level". ♻.
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BTW, I'm not really looking for job opportunities, I'm too happy where I am right now to look anywhere else. 😎💥. But it was still fun to see that. 😁🤷.
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When I built @FastAPI I hoped it would be useful for some people. but I didn't expect this. 🤓. That's more zeroes than I can count. 😅🚀.
FastAPI has been downloaded 1 billion times. 😮🥳🎉. 1,000,000,000 downloads. That's a lot! 😁🚀. You can check it in
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BTW, as this is being retweeted again, I wanted to clarify this:. That was about half a year ago. Now I have 2+ years of experience with FastAPI! 🎉. almost there. 😂.
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Big project, first public release! 📢. ✨ SQLModel ✨. the biggest thing I've built since FastAPI & Typer. 🤓. SQL DBs based on Python type hints. 😎. Each model is both a Pydantic and @sqlalchemy model. 🤯. Optimized for FastAPI 🚀.
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Why companies keep asking for so many required years of experience? 😩. I created @FastAPI just 3.5 years ago, I'll never be able to apply to those precious FastAPI jobs! 😱😆. Seriously, experience is a really bad proxy estimator for skill level. 🤓. Déjà vu 🤷.
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Ahhh! 🤩. @FastAPI just reached 50k stars on GitHub! ⭐. When I started working on FastAPI, the most popular, huge, mainstream frameworks and tools I used and admired had 50k stars. 🧙. I didn't imagine FastAPI would get to this point and become one of the most used frameworks 🤯
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When not the creator of Flask gets to take a selfie with not the creator of Redux (@acemarke) and not the creator of React (@dan_abramov). 😅🤩
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Full Stack FastAPI Template ✨. Latest @FastAPI, @pydantic, SQLModel 🚀. Brand new frontend with React, TS, Vite, Chakra UI, TanStack Query/Router, generated client/SDK 🎨. CI/CD - GitHub Actions 🤖. Test cov > 90% ✅. Thanks to @alejsdev, @esteban_x64 🙇.
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Imagine I apply to that FastAPI job requiring 4+ years of experience ✅. They accept my 1.5+ experience (as the author) ⏳. Next requirement: a specific degree 👨🎓. This is my latest official diploma 🌈. Can we also rethink those degree requirements? 🤔. mine is preschool 🤷
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Years of Experience ≠ Skill Level ✨. I created @FastAPI 4 years ago, am I the only senior FastAPI dev? NO. There are tons. 🤯. For many modern jobs, years of experience is not a good estimator for skill level. 🚨. Companies: don't ask for that. ➖. People: just apply. ➕. 🧵.
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@mikaeriohana @amcod3 And then they would say: "Ah, okay, hmm, that's fine then. Wait, but you don't have a degree, sorry. next one!" 😂.
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🚨 Do you like FastAPI and Pydantic?. We need your help 🙏. They use type annotations for more than "type hints":. * validation.* serialization.* documentation. "Like" this tweet and the issue to show your support for that usage in the future of Python, it's being debated now.
URGENT: If you use pydantic or @tiangolo's FastAPI and/or want to use them in the future, you need to read this:.
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Just found this in the wild. again 😂. As time has passed, recruitment has changed. now it's 6 years of experience with @FastAPI 🤦. No one has that, I'm pretty sure, I have 4+ and I created it 😅. AGAIN: years of experience ≠ skill level 😎. Please stop that, STAAAHP! 😬
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🤯🎉.
FastAPI won an award given by @InfoWorld as one of the best open source software projects of 2021 🤩🤯🎉.
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I got the chance to meet the great @mitsuhiko, creator of Flask, Click, Jinja, etc. 🤩. His projects have helped me (and probably you) so much over the years! And they inspired a lot of the things I've built too. 🤓
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Whaaat?! 🤯. @FastAPI now has more GitHub stars than. Java's Spring Framework 😱.
*tiangolo/fastapi* just surpassed *spring-projects/spring-framework* in stars on #GitHub 💥. It is now the #93 most starred software repo with 49k 🌟. @tiangolo #tiangolo #fastapi #Python #springprojects #springframework #Java.
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uv venv creates a virtual environment. ✨ with a sensible default (.venv).🤩 includes a .gitignore for it. chefkiss 👩🍳. uv pip compile and uv pip install are crazy fast 😮. I have to manually check the files to confirm it actually did something, it's annoyingly fast 🤯.
Announcing uv: an extremely fast Python package installer and resolver, written in Rust. uv is designed as a drop-in alternative to pip, pip-tools, and virtualenv. With a warm cache, uv installs are near-instant. Here, it's > 75x faster than pip and pip-tools.
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So, @FastAPI now uses the Ruff formatter. 😎✨. Ruff alone is now replacing (for me):. * flake8.* autoflake.* isort.* pyupgrade.* black. and Ruff is still crazy fast. 🚀. I keep intentionally adding broken code just to ensure it is indeed running. 🤪.
Announcing the Ruff formatter: an extremely fast, Black-compatible Python formatter. Over 30x faster than Black -- and over 99.9% compatible. Try it now with `pip install ruff` and `ruff format`.
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Yesterday I got the screenshot just at the right time, with all zeros. 🎉. Cheers to you all 50K really cool nerds. 🤓😎. I have no idea where we're going but thanks for following along! 🚀
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SQLModel was released almost 3 days ago. And it already has more than 3000 GitHub stars. ⭐. That's mind-blowing and unexpected. 🤯. I'm so happy it could be useful to people, and that those intense past months of work were not in vain. 😁🎉.
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I've had the chance to try out GitHub Copilot for the last 20 days or so, during the private beta. 🧪. It's seriously mind-blowing, difficult to overhype. 🤯. This is the future of coding, AI used to make us all even more productive. 🚀🤩.
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@eruslawliet Yeah, it's probably: . > We need a senior something, how many years are there in the table for "senior"? 4+ years? Good, put that.
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@reis_anto Hehe, and the overlapping tools for the same thing, like:. > Must know Hadoop, Spark, Dask because we want ✨ Big Data ✨.
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@mikaeriohana @amcod3 😩😭 Next thing is me walking sadly out of the building holding hands with my impostor syndrome and asking myself why did I ever think I was good enough to work using that framework . 😂😂😂.
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The future of Python is Annotated 😎🚀. It took a while to get this done as it involved several days thoroughly reviewing the core PR (impeccable job) and a couple of weeks of full-time, continuous, focused work rewriting the docs, examples, and tests ✅. Now it's finally out! 🎉.
FastAPI 0.95.0 supports and recommends Annotated! 🚀. Probably the biggest feature in months 🎉. Many benefits, re-use your functions in other places (soon you'll be able to use Typer with FastAPI in the same functions), reduce code duplication for dependencies in big apps 😎
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This is huge! 🚀. Now you no longer need Gunicorn for anything with @FastAPI. For the cases where you would have used Gunicorn, you can now just run Uvicorn (or the fastapi command) with --workers 🎉. Also applies to a couple of my Docker images, they are no longer necessary. 🔥.
Uvicorn 0.30.0 released!. Here are the highlights!.
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It seems that in the past couple of months @FastAPI passed Django in downloads 🤯. I don't even know what that means, but it's still unbelievable 😱. Thanks @ashok_tankala for showing me and for building the analyzer!
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"FastAPI: 5 years (Preferred)" 😂. NOOOOOO!!! 🤦. How often and for how long is this gonna keep happening? 🤣. I made @FastAPI 4 years ago, FOUR YEARS AGO. 🤦. I thought it was a one-time "meme-like" thing, but this now feels like a subscription.
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I'm working pretty much full-time on open source ✨. This is the year of @FastAPI and friends! 🚀. Thanks to @sequoia (with @laurenmhreeder and @BogieBalkansky) for bringing me as the first Open Source Fellow 😎. so many features and plans you haven't even seen yet! 🤩🎁.
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Version 2 of @pydantic, rewritten in Rust, was just merged! 🤯🎉. A few tweaks and soon a release, 10X faster, including in @FastAPI, for free. 🚀. If your APIs are 10x faster, how much money will you save on servers monthly?. Go sponsor @samuel_colvin 😎.
I'VE MERGED THE MONSTER.🚀. After 7 weeks work, +7,782 −11,105 changes; the main switch in @pydantic to use pydantic core is merged. It should now be much easier for others to contribute to the effort to get pydantic V2 out. 🙏.
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The official full-stack @FastAPI template now uses @astral_sh's uv for managing the project's dependencies 😎🚀. Plus some extra improvements, better development workflow, simplifications, etc. 🎁.
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I bring big SQLModel good news! 🎉. SQLModel 0.0.12, just released, now uses SQLAlchemy 2.0, the latest version. ✨. Better performance, better types, compatibility with other new tools and features from SQLAlchemy, and more. 😎🚀.
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How is @pydantic v2 rewritten in Rust and 22x faster (that's 2200% faster) by @samuel_colvin 😎🚀🐍
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The docs for FastAPI consume 200 GB of bandwidth per month. 🏄. That's 200 GB from mostly text files. 🤯. This makes sense with 600K page views a month. But that's also 🤯🚀.
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Did you watch Narcos? Fine. But now you owe it to your Colombian friends around the world (including me 😁🇨🇴) to watch @EncantoMovie. Get a taste of what Colombia really feels like. A great movie, already on @disneyplus. Even the research they did is a work of art on its own. 🎨.
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This is how I look like in a mask, if you're in #PyConUS2023 come and say hi! 👋. I'll be around in the hallways. 🤓👋
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The @StackOverflow developer survey results came out. 📊. I found some reasons why someone would want to learn or work using @FastAPI in the next months/year. 😅🤓👇
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Reddit tends to be a dark and bitter place, but sometimes it's just so extreme that it gets funny. 😂. Now we know why I use emojis, I guess. 🤣. Does vitamin C count? Maybe it's the disturbing amounts of coffee? 🤔
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I never imagined @FastAPI would be used so much, by so many people, products, and companies 🤩.
The @StackOverflow developer survey is out! 🚀. It seems there are more people using FastAPI than Ruby on Rails 🤯.
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Great news for #pydantic and @FastAPI! 🎉. Pydantic v2 with the core in Rust will be about 17x faster! 🤯 Plus more things 🎁. How much money will that mean to your company in cloud cost savings, speed, etc? 💸. Invest 10% of that money in making it happen, sponsor @samuel_colvin.
Big #pydantic news: 🥳. I've (finally) written up the plan for Pydantic V2. Please share. Please give feedback (best via github discussions). Changes will be much easier now than after release!!!. #python #opensource.
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I just released FastAPI 0.66.0 🚀. This is now possible, you can use a response_class=FileResponse and then just return the path of the file. 🎉. plus other fixes:
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Massively good news for companies using Python, @pypi will have:. 🔒 Private packages.🏢 Org accounts.✨ Namespaces. This will help, simplify, and improve a lot of things for organizations, preventing/improving a lot of possible security issues, while also supporting @ThePSF 🎉.
The PSF conducted three surveys to gather community requirements that would drive future development. The feedback summary is available on @ThePSF's blog:.
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Now @code has a @FastAPI tutorial with @pythonvscode and @github Codespaces. 😎. Including how to use the debugger (it's great) and finishing with a bonus of how to create a ChatGPT plugin. 🚀🎉.
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Part of the work I've done with @forethought_ai is lead an effort to migrate from Flask to @FastAPI. 🚀. Here's the first blog post out of 3, with all the tips and tricks to migrate a real-life, huge, production code base. 🤓. I hope it's useful! 😁🎉.
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I spent last week renovating the FastAPI Deployment docs, with details for Kubernetes, Gunicorn with Uvicorn, processes, etc. 🤓. Several recent consultancy contracts involved a bunch of questions around them, so now I put all that info there to make it accessible to everyone. 🎁.
The FastAPI Deployment guide was just revamped ✨. 💡 Deployment Concepts: 👩🏭 Gunicorn with Uvicorn: 🐋 FastAPI in Containers and Kubernetes:
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Creo que @platzi (@walis85300) me hizo la entrevista en español más completa que haya recibido. Tal vez me fui muy profundo a contar detalles de @FastAPI y otras cosas 😅.
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Finally here! The FastAPI reference docs. 😎. You probably don't know how much work this required. 😅. It uses my new (experimental?) PEP 727 to define docs for parameters. 🤓.
Here it is: the FastAPI Reference - Code API in the docs. ✨. One of the most awaited requests from many users. 🔥. FastAPI 0.104.0 🔖.
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Python 3.9! 🐍🚀. We'll be able to use:. some_var: list[dict[str, int]]. without importing typing!. (Coming soon to a Pydantic/FastAPI near you) ✨.
#Python 3.9 is now officially available! Get it here:. Released on time, on budget, great features and optimizations, a million household uses! Easily our best release ever!. That is until 3.10 next year. But you go pester the new RM @pyblogsal for THAT!.
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Come to the Python dark side, we have @FastAPI cookies 🍪.
Yes, I am a JavaScript developer. But I am starting to like Python because of FastAPI.
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Look at this! 🤯. > FastAPI was introduced to the options for the first time with this iteration of the survey, and it appears to be the third most popular web framework for Python. It's an honor to be among Flask, Django, and other great libs that inspired and paved the way. 🚀.
The results of Python Developers Survey 2020 are in. Learn about the community! #pythondevsurvey.
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Green mango with salt and lemon from my grandma's garden 😁🥭🇨🇴
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Exactly one year ago was the first public release of FastAPI. Today I have a new Christmas present for my fellow developers!. Typer: the FastAPI of CLIs 🚀.
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Congrats to @djangoproject for getting 80K @github stars! 🥳🍰. It's the most starred backend framework. not only in Python, but in all programming languages! 😎🎉.
Django just hit 80,000 stars on GitHub! 🚀. With each new star, Django’s journey grows brighter. From personal projects to massive applications, Django has become the backbone of countless innovations worldwide, thanks to YOU—the amazing community! 💫✨. #Django80K #django.
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That feeling when you merge the "Format with Black" PR 🖤😎
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✨ The Future of FastAPI and Pydantic is Bright ✨. Thanks to many efforts from the whole Python community. Here's a simple explanation of how Pydantic and FastAPI use Python's type annotations, details about PEP 563, and more about their future. 🐍.
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Let's celebrate! @FastAPI with @pydantic v2! 🍾🎉. I have been working on this for so long (months), I can't believe it's out now. 🤯. A good moment to thank @sequoia (@BogieBalkansky, @laurenmhreeder) for having me as the first Open Source Fellow. That enabled building this. 🏗️.
IT'S HERE! 🍾🎉. FastAPI 0.100.0, final release 🚀. Official support for @pydantic v2 😎. Still supporting Pydantic v1 🤓. Is there a better way to celebrate 60k GitHub stars? ✨. Check out the release notes:
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This is BIG. 🤯. @samuel_colvin is starting a @pydantic company, backed by @sequoia and others. 🚀. Fantastic news for @FastAPI and actually Python in general. 🎉. I so look forward to what Samuel and his team will build! 🤩. And the team he's assembling . chef kiss. 👨🍳👌.
Big @pydantic Announcement 🚀. I've just closed a seed round led by @sequoia with @PartechPartners. Here's the @TechCrunch article!. More info on
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Did you notice? Pydantic v1.9 is out! 🚀. Some highlights:. 📦 Prebuilt binary wheels for M1 macs.🐍 Python 3.10 support, with new syntax for None defaults (unions) 👇.🧙 Autocomplete and inline errors in @pythonvscode 👇. 🙇 @samuel_colvin.Also 👏 @JoliboisEric, and others.
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New FastAPI version 0.62.0! 🔖🎉. Includes:. 👑 Global dependencies: 🧙 APIRouter-level: dependencies, tags, path prefix, and more. 🔧 Extras in include_router. 📝 New docs for "Bigger apps":
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Today is my birthday 2**5 🥳🎉. The last power of two in a long while 😅.
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The biggest Typer release in a long time 🤯🎉. Deep integration with @textualizeio (@willmcgugan) Rich 💰🎨. Still optional, but if you install Rich, or:. pip install "typer[all]". your app will shine, by default ✨. Go get version 0.6.1 (a quick bug fix on top of 0.6.0) 🔖
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Big Typer release, 0.12.0 🤩. Any Python script is a command line app 😎. You don't even need to use Typer in your code ✨.
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For my next steps, I'm structuring everything to dedicate working time to FastAPI, Typer, and the other open source projects. 🎉. And I plan to put a lot of time into them. 🤓. I'll also reserve time for some consulting contracts, to help other teams. 💪.
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During the next days, I will be sharing here, in small batches, a short summary of my keynote talk at @PyConChina. Let's explore some "Modern Python through FastAPI and friends" 🐍😎🚀
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If you write Python in @code , I highly recommend you to try . It complements the official extension @pythonvscode , and provides some great features on top:. * Completion and checks for more edge cases.* Autoimports.* Dead code coloring.* Super fast.
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I just realized that C# ("C sharp") is a music pun, as in "next note after C". Probably a pointer to how C++ is a pun, as in "next increment after C". So, Spanish-speaking C# devs should say they code in "Do sostenido". or learn Python and use @FastAPI, that's easier. 😅.
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I had never done so much Python black magic as this last weekend 😅🐍🧙. But here's some (unreleased) lab experiment 🧪. This is a Pydantic model AND a SQLAlchemy model, at the same time. All based on Python type annotations ✨
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Here's the recording of my talk "Modern Python through FastAPI and Friends" at PyCon MEA in Dubai 🤓. And the slides: With @globaldevslam at @GITEX_GLOBAL.
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