Coverage.py

Code coverage measurement for Python.

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Coverage.py measures code coverage, typically during test execution. It uses the code analysis tools and tracing hooks provided in the Python standard library to determine which lines are executable, and which have been executed.

Coverage.py runs on these versions of Python:

• Python 3.11 through 3.15, including free-threading.
• PyPy3 version 3.11.

Documentation is on Read the Docs. Code repository and issue tracker are on GitHub.

For Enterprise

Available as part of the Tidelift Subscription. Coverage and thousands of other packages are working with Tidelift to deliver one enterprise subscription that covers all of the open source you use. If you want the flexibility of open source and the confidence of commercial-grade software, this is for you. Learn more.

Getting Started

Looking to run coverage on your test suite? See the Quick Start section of the docs.

Change history

The complete history of changes is on the change history page.

Code of Conduct

Everyone participating in the coverage.py project is expected to treat other people with respect and to follow the guidelines articulated in the Python Community Code of Conduct.

Contributing

Found a bug? Want to help improve the code or documentation? See the Contributing section of the docs.

Security

To report a security vulnerability, please use the Tidelift security contact. Tidelift will coordinate the fix and disclosure.

License

Licensed under the Apache 2.0 License. For details, see NOTICE.txt.