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Sort tests by their last duration, slowest first

Project description

PyPI version Python versions See Build Status on AppVeyor

Sort tests by their last duration, slowest first.

This pytest plugin was generated with Cookiecutter along with @hackebrot’s cookiecutter-pytest-plugin template.


  • Sort tests on consecutive runs by their last duration, slowest first.

  • Works with pytest-xdist by pre-assigning tests to workers based on their last duration.


  • pytest

  • pytest-xdist (optional)


You can install “pytest-slowest-first” via pip from PyPI:

$ pip install pytest-slowest-first


For best results, use this plugin with pytest-xdist to run tests in parallel. When used together, make sure to pass --dist=loadscope to pytest to ensure that tests are distributed evenly across workers.

Example command line:

$ pytest --sf -n auto --dist=loadscope


Contributions are very welcome. Tests can be run with tox, please ensure the coverage at least stays the same before you submit a pull request.


Distributed under the terms of the MIT license, “pytest-slowest-first” is free and open source software


If you encounter any problems, please file an issue along with a detailed description.

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