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Thepytest framework makes it easy to write small tests, yetscales to support complex functional testing for applications and libraries.

An example of a simple test:

# content of test_sample.pydefinc(x):returnx+1deftest_answer():assertinc(3)==5

To execute it:

$ pytest============================= test session starts =============================collected 1 itemstest_sample.py F================================== FAILURES ===================================_________________________________ test_answer _________________________________    def test_answer():>       assert inc(3) == 5E       assert 4 == 5E        +  where 4 = inc(3)test_sample.py:5: AssertionError========================== 1 failed in 0.04 seconds ===========================

Due topytest's detailed assertion introspection, only plainassert statements are used. Seegetting-started for more examples.

• Detailed info on failingassert statements (no need to rememberself.assert* names)
• Auto-discoveryof test modules and functions
• Modular fixtures formanaging small or parametrized long-lived test resources
• Can rununittest (or trial)test suites out of the box
• Python 3.10+ or PyPy3
• Rich plugin architecture, with over 1300+external plugins and thriving community

For full documentation, including installation, tutorials and PDF documents, please seehttps://docs.pytest.org/en/stable/.

Please use theGitHub issue tracker to submit bugs or request features.

Consult theChangelog page for fixes and enhancements of each version.

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Copyright Holger Krekel and others, 2004.

Distributed under the terms of theMIT license, pytest is free and open source software.