<ul><li>Doctest: A simple testing framework that allows writing test cases within function docstrings and automatically locates the test cases within the docstrings.</li><li>Unittest: A Python built-in library that supports writing class and method-based test cases, separates code and test cases, and the test case names should start with 'test_'.</li><li>Pytest: An external Python library that doesn't require writing class-based test cases, provides less verbose and more descriptive outputs, and supports code coverage.</li><li>For cases where test cases require specific setup, Unittest provides setUp() and tearDown() functionality, while Pytest provides the @pytest.fixture decorator.</li></ul>

Python Code Testing Frameworks to Choose From

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