`uv` is a [[Python]] [[Packaging in Python|packaging]] tool, developed by [[Astral]], that aims to be extremely fast and provide end to end solutions for Python projects, [[Python Environment|Python environments]], single-file scripts and even Python management itself. They try to position themselves as "_[[Cargo]], for [[Python]]_". `uv` provides: - **End-to-end project management**: an alternative to [[Poetry]] or [[Rye]], uv can generate and install cross-platform lockfiles. - `uv init`: creates a basic project layout. - `uv run` - `uv lock` - `uv sync` - **Tool management**: it can install command-line tools in isolated virtual environments and execute one-off commands without explicit installation, making it an alternative to [[pipx]] - `uv tool install` - `uv tool run` / `uvx`: Run the tool without any previous installation instruction. It can also include dependencies using `--with`; for example: `uvx --with pandas --with seaborn jupyter lab` will spin a Jupyter Lab instance with some packages available. - **Python installation**: it can bootstrap and install different Python versions, making it an alternative to [[pyenv]]. - `uv python install` - **Script execution**: manage hermetic, single-file Python scripts using inline dependency metadata based on PEP 723. - `uv run`