python

To set up a Python project with a virtualenv and pyproject.toml, create a structured layout using src/ for code and tests/ for testing, then configure packaging and pytest within the pyproject.toml file.

The best way to structure a new Python CLI application is to use a standardized project layout with src/ for code, tests/ for tests, and modern configuration via pyproject.toml to reduce onboarding friction.

Yes, this Python project setup applies to both new and existing projects, enforcing a standardized structure with venv handling, pyproject.toml configuration, and pytest-based testing for reproducible environments.

You need to activate a virtual environment before running pip install to ensure reproducible environments and isolate dependencies, which is a core rule enforced by this Python project setup workflow.

You configure pytest for a Python project by defining test configurations directly within the pyproject.toml file, establishing a robust testing workflow alongside packaging settings and the src/ directory structure.