Python Project Setup with uv

uv is a fast Python package installer and resolver that replaces pip and virtualenv. Use `uv init` to create a new project with a virtual environment, `pyproject.toml`, and `.python-version` file, then `uv pip install` to add dependencies. uv handles environment creation, dependency locking, and Python version pinning in one workflow.

Yes. uv reads existing `requirements.txt` and `pyproject.toml` files directly. Run `uv pip install -r requirements.txt` to install dependencies into a uv-managed environment, or use `uv pip sync` to match exact versions. uv works alongside your current setup without replacing existing files.

Define dev dependencies in `pyproject.toml` under `[project.optional-dependencies]` or use `uv pip install --editable .` for editable installs during development. uv installs and manages both production and development tools in the same virtual environment, supporting isolated tooling configuration.

uv combines the speed of Rust with unified dependency resolution, replacing separate `venv`, `pip`, and `pip-tools` workflows. It locks dependency versions automatically, pins Python versions per project, and installs packages faster than pip, all managed through a single command interface.

Yes. uv automatically detects and reads both formats. It respects version constraints in `pyproject.toml` and can install from `requirements.txt` files or sync exact versions. You can mix formats—uv handles dependency resolution and environment setup regardless of which file stores your specifications.

uv can download and manage Python versions automatically. Set your desired version in `.python-version` or `pyproject.toml`, and uv installs it on first run. This eliminates version conflicts across projects and simplifies onboarding for team members.