uv

uv — Astral's single, fast (Rust) binary that replaces pip, pip-tools, pipx, pyenv, poetry/pdm, and virtualenv for Python packaging and project management. Use when managing a Python project with pyproject.toml + a universal uv.lock (uv init/add/remove/sync/lock/run), running PEP 723 inline-metadata scripts (uv run script.py), running one-off tools with uvx or installing them with uv tool install, installing/pinning Python versions (uv python install/pin/list), using uv pip as a faster drop-in pip/pip-tools replacement, creating venvs (uv venv), or building/publishing packages (uv build/uv publish). Triggers on mentions of uv, the uv command, uvx, uv.lock, tool.uv, uv add/sync/run, PEP 723 # /// script blocks, or "fast Python package manager". This is the uv CLI by Astral — NOT ruff (linter/formatter) or ty (type checker), which are separate Astral tools, and NOT poetry/pip/pyenv themselves.