mtlmtlmtlmtl 16 hours ago

I'm sure it's true and all. But I've been hearing the same claim about all those tools uv is intended to replace, for years now. And every time I try to run any of those, as someone who's not really a python coder, but can shit out scripts in it if needed and sometimes tries to run python software from github, it's been a complete clusterfuck.

So I guess what I'm wondering is, are you a python guy, or are you more like me? because for basically any of these tools, python people tell me "tool X solved all my problems" and people from my own cohort tell me "it doesn't really solve anything, it's still a mess".

If you are one of us, then I'm really listening.

  • hobofan 15 hours ago

    I'm one of you.

    I'm about the highest tier of package manager nerd you'll find out there, but despite all that, I've been struggling to create/run/manage venvs out there for ages. Always afraid of installing a pip package or some piece of python-based software (that might muck up Python versions).

    I've been semi-friendly with Poetry already, but mostly because it was the best thing around at the time, and a step in the right direction.

    uv has truely been a game changer. Try it out!

  • tinco 15 hours ago

    As a Ruby guy: uv makes Python feel like it finally passed the year 2010.

  • Yoric 14 hours ago

    As a developer: it basically solved all of my problems that could be solved by a package manager.

    As an occasional trainer of scientists: it didn't seem to help my students.

    • buildbot 14 hours ago

      It installs stuff super fast!

      It sadly doesn’t solve stuff like transformer_engine being built with cxx11 ABI and pytorch isn’t by default, leading to missing symbols…

  • OrderlyTiamat 14 hours ago

    I'm (reluctantly) a python guy, and uv really is a much different experience for me than all the other tools. I've otherwise had much the same experience as you describe here. Maybe it's because `uv` is built in rust? ¯\_ (ツ)_/¯

    But I'd also hesitate to say it "solves all my problems". There's plenty of python problems outside of the core focus of `uv`. For example, I think building a python package for distribution is still awkward and docs are not straightforward (for example, pointing to non-python files which I want to include was fairly annoying to figure out).

  • beacon294 8 hours ago

    It doesn't handle python version management, it only handles pip. It doesn't solve bundling Python.

  • OoooooooO 13 hours ago

    As a mainly Python guy (Data Engineering so new project for every ETL pipeline = a lot of projects) uv solved every problem I had before with pip, conda, miniconda, pipx etc.

  • J_Shelby_J 15 hours ago

    Isn’t UV essentially cargo for python?

    • adastra22 14 hours ago

      Somewhat literally so. It is written in Rust and makes use of the cargo-util crate for some overlapping functionality.

  • rossant 10 hours ago

    I know, but uv truly is different.

  • jhardy54 15 hours ago

    I’m a “Python guy” in that I write Python professionally, but also am like you in that I’ve been extremely underwhelmed by Portry/Pipenv/etc.

    Python dependencies are still janky, but uv is a significant improvement over existing tools in both performance and ergonomics.

DiabloD3 17 hours ago

uv is great, but I think the real fix is just abandoning Python.

The culture that language maintains is rather hostile to maintainable development, easier to just switch to Rust and just write better code by default.

  • trklausss 17 hours ago

    Every tool for the right job. If you are doing tons of scripting (for e.g. tests on platforms different than Rust), Python can be a solid valid alternative.

    Also, tons of CAE platforms have Python bindings, so you are "forced" to work on Python. Sometimes the solution is not just "abandoning a language".

    If it fits your purpose, knock yourself out, for others that may be reading: uv is great for Python dependency management on development, I still have to test it for deployment :)

    • aeve890 17 hours ago

      >Every tool for the right job. If you are doing tons of scripting (for e.g. tests on platforms different than Rust), Python can be a solid valid alternative.

      I'd say Go is a better alternative if you want to replace python scripting. Less friction and much faster compilation times than Rust.

      • DiabloD3 16 hours ago

        I am not a huge fan of Go, but if all the world's "serious" Python became Go, the average code quality would skyrocket, so I think I can agree to this proposal.

      • physicsguy 16 hours ago

        Go performance is terrible for numeric stuff though, no SIMD support.

  • airza 17 hours ago

    There's not really another game in town if you want to do fast ML development :/

    • DiabloD3 17 hours ago

      Dunno, almost all of the people I know anywhere in the ML space are on the C and Rust end of the spectrum.

      Lack of types, lack of static analysis, lack of ... well, lack of everything Python doesn't provide and fights users on costs too much developer time. It is a net negative to continue pouring time and money into anything Python-based.

      The sole exclusion I've seen to my social circle is those working at companies that don't directly do ML, but provide drivers/hardware/supporting software to ML people in academia, and have to try to fix their cursed shit for them.

      Also, fwiw, there is no reason why Triton is Python. I dislike Triton for a lot of reasons, but its just a matmul kernel DSL, there is nothing inherent in it that has to be, or benefits from, being Python.... it takes DSL in, outputs shader text out, then has the vendor's API run it (ie, CUDA, ROCm, etc). It, too, would benefit from becoming Rust.

      • mountainriver 15 hours ago

        I love Rust and C, I write quite a bit of both. I am an ML engineer by trade.

        To say most ML people are using Rust and C couldn’t be further from the truth

        • Narishma 15 hours ago

          They said most people they knew, not most people.

      • wolvesechoes 13 hours ago

        > It, too, would benefit from becoming Rust.

        Yet it was created for Python. Someone took that effort and did it. No one took that effort in Rust. End of the story of crab's superiority.

        Python community is constantly creating new, great, highly usable packages that become de facto industry standards, and maintain old ones for years, creating tutorials, trainings and docs. Commercial vendors ship Python APIs to their proprietary solutions. Whereas Rust community is going through forums and social media telling them that they should use Rust instead, or that they "cheated" because those libraries are really C/C++ libraries (and BTW those should be done in Rust as well, because safety).

      • nkozyra 16 hours ago

        > Dunno, almost all of the people I know anywhere in the ML space are on the C and Rust end of the spectrum.

        I wish this were broadly true.

        But there's too much legacy Python sunk cost for most people though. Just so much inertia behind Python for people to abandon it and try to rebuild an extensive history of ML tooling.

        I think ML will fade away from Python eventually but right now it's still everywhere.

        • DiabloD3 14 hours ago

          A lot of what I see in ML is all focused around Triton, which is why I mentioned it.

          If someone wrote a Triton impl that is all Rust instead, that would do a _lot_ of the heavy lifting on switching... most of their hard code is in Triton DSL, not in Python, the Python is all boring code that calls Triton funcs. That changes the argument on cost for a lot of people, but sadly not all.

      • airza 15 hours ago

        Okay. Humor me. I want to write a transformer-based classifier for a project. I am accustomed to the pytorch and tensorflow libraries. What is the equivalent using C?

    • pjmlp 12 hours ago

      PyTorch also supports C++ and Java, Tensorflow also does C++ and Java, Apple AI is exposing ML libraries via Swift, Microsoft is exposing their AI stuff via .NET and Java as well, then there is Julia and Mojo is coming along.

      It is happening.

      • og_kalu 12 hours ago

        TensorFlow is a C++ library with a python wrapping, yet nobody (obviously exaggeration) actually uses tensorflow (or torch) in C++ for ML R&D.

        It's like people just don't get it. The ML ecosystem in python didn't just spring from the ether. People wanted to interface in python badly, that's why you have all these libraries with substantial code in another language yet development didn't just shift to that language.

        If python was fast enough, most would be fine to ditch the C++ backends and have everything in python, but the reverse isn't true. The C++ interface exists, and no-one is using it.

    • [removed] 15 hours ago
      [deleted]
  • pjmlp 16 hours ago

    I know Python since version 1.6.

    It is great for learning on how to program (BASIC replacement), OS scripting tasks as Perl replacement, and embedded scripting in GUI applications.

    Additionally understand PYTHONPATH, and don't mess with anything else.

    All the other stuff that is supposed to fix Python issues, I never bothered with them.

    Thankfully, other languages are starting to also have bindings to the same C and C++ compute libraries.

  • wavemode 12 hours ago

    Rust is not a viable replacement for Python except in a few domains.

  • Exuma 17 hours ago

    i hate python, but the idea of replacing python with rust is absurd

  • WhereIsTheTruth 15 hours ago

    abandoning Python for Rust in AI would cripple the field, not rescue it

    the disease is the cargo cult addiction (which Rust is full of) to micro libraries, not the language that carries 90% of all peer reviewed papers, datasets, and models published in the last decade

    every major breakthrough, from AlphaFold to Stable Diffusion, ships with a Python reference implementation because that is the language researchers can read, reproduce, and extend, remove Python and you erase the accumulated, executable knowledge of an entire discipline overnight, enforcing Rust would sabotage the field more than anything

    on the topic of uv, it will do more harm than good by enabling and empowering cargo cults on a systemic level

    the solution has always been education, teaching juniors to value simplicity, portability and maintainability

    • stonemetal12 12 hours ago

      Nah, it would be like going from chemistry to chemical engineering. Doing chemical reactions in the lab by hand is great for learning but you aren't going to run a fleet of cars on hand made gas. Getting ML out of the lab and into production needs that same mental conversion from CS to SE.

TheAceOfHearts 17 hours ago

Switching to uv made my python experience drastically better.

If something doesn't work or I'm still encountering any kind of error with uv, LLMs have gotten good enough that I can just copy / paste the error and I'm very likely to zero-in on a working solution after a few iterations.

Sometimes it's a bit confusing figuring out how to run open source AI-related python projects, but the combination of uv and iterating on any errors with an LLM has so far been able to resolve all the issues I've experienced.

shepardrtc 14 hours ago

uv has been amazing for me. It just works, and it works fast.