python-env

# Python Environment Fast Python environment management with uv. ## Quick Commands | Task | Command | |------|---------| | Create venv | `uv venv` | | Install package | `uv pip install requests` | | Install from requirements | `uv pip install -r requirements.txt` | | Run script | `uv run python script.py` | | Show installed | `uv pip list` | ## Virtual Environment ```bash # Create venv (instant) uv venv # Create with specific Python uv venv --python 3.11 # Activate (or use uv run) source .venv/bin/activate # Unix .venv\Scripts\activate # Windows ``` ## Package Installation ```bash # Single package uv pip install requests # Multiple packages uv pip install flask sqlalchemy pytest # With extras uv pip install "fastapi[all]" # Version constraints uv pip install "django>=4.0,<5.0" # Uninstall uv pip uninstall requests ``` ## Minimal pyproject.toml ```toml [project] name = "my-project" version = "0.1.0" requires-python = ">=3.10" dependencies = [ "httpx>=0.25", "pydantic>=2.0", ] [project.optional-dependencies] dev = [ "pytest>=7.0", "ruff>=0.1", ] ``` ## Project Setup Checklist ```bash mkdir my-project && cd my-project uv venv # Create pyproject.toml uv pip install -e ".[dev]" uv pip list ``` ## Troubleshooting | Issue | Solution | |-------|----------| | "No Python found" | `uv python install 3.11` | | Wrong Python version | `uv venv --python 3.11` | | Conflicting deps | `uv pip compile --resolver=backtracking` | | Cache issues | `uv cache...