Pytest-tia – run only the tests your Git diff affects, with receipts

Pytest-tia is a developer tool that automatically selects and runs only the pytest tests affected by your current Git diff, using cached "receipts" to track test dependencies. It is designed for developers working on large test suites who want to drastically reduce feedback loops during development. Its interesting value lies in combining Git-aware test selection with persistent dependency tracking, enabling near-instantaneous test runs without requiring manual test tagging or full CI pipelines.