Seconded. I tried it when it was the topic around here a month or so back and it blew me away. Wow. I've been writing Python for ~25 years. I dipped my toes in Rust a year ago and quickly appreciated now nice Cargo is for that ecosystem. Uv feels, to me, like Cargo for Python.

It doesn't do anything I couldn't already do with other tools. It just combines those other tools' functions into one cohesive, ridiculously fast, ergonomic tool. I won't say anything bad about Poetry. I used that prior to uv. I don't want to return to it though.