TestPyPI
Domain: PyPI & Conda
🎯 Motivation
A separate instance of PyPI for testing uploads. It lets you practise publishing without polluting the real index.
📋 Concrete Example
Use twine upload --repository testpypi dist/* to push to test.pypi.org before the real release.
🔗 Analogy
TestPyPI is a dress rehearsal stage — you perform the full upload routine without the live audience.