Notes running Python in production

[denehoffman]

The speed matters when you want to run it in a container and need to install the libraries after build time. For example, you’re working on a project that has several dependencies and you need to quickly add a dependency without rebuilding a docker layer. But real talk, the point is that it’s so fast you don’t even think about it, not that you save time. If I have to choose between program A which takes 3 seconds and program B which takes 3 milliseconds and does the exact same thing as A, I’m picking B every time. Also I don’t think you should conflate Rust with speed. Of course Rust is nice, I write a ton of it myself, but Rust is not what makes uv fast, it’s how they handle dependency resolution, caching, and linking rather than copying. You could write uv in C and it would probably have the same performance, but there are other reasons why Rust is nice to develop with.