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Mypy static type checker plugin for pytest

• Runs the mypy static type checker on your source files as part of your pytest test runs.
• Does formypy what thepytest-flake8 plugin does forflake8.
• This is a work in progress – pull requests appreciated.

You can install "pytest-mypy" viapip fromPyPI:

$ pip install pytest-mypy

You can enable pytest-mypy with the--mypy flag:

$ py.test --mypy test_*.py

Mypy supportsreading configuration settings from amypy.ini file.Alternatively, the plugin can be configured in aconftest.py to invoke mypy with extra options:

defpytest_configure(config):plugin=config.pluginmanager.getplugin('mypy')plugin.mypy_argv.append('--check-untyped-defs')

You can restrict your test run to only perform mypy checks and not any other tests by using the -m option:

py.test --mypy -m mypy test_*.py

Distributed under the terms of theMIT license, "pytest-mypy" is free and open source software

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

Daniel Bader –@dbader_org –https://dbader.org –mail@dbader.org

https://github.com/realpython/pytest-mypy