twine
Domain: PyPI & Conda
🎯 Motivation
The recommended tool for uploading packages to PyPI. It uses HTTPS authentication and is safer than the old python setup.py upload.
📋 Concrete Example
Build with python -m build, then twine upload dist/* to publish both wheel and sdist.
🔗 Analogy
Twine is a courier service — it securely carries your packaged goods to the PyPI warehouse.