A Pytest Plugin for Mypy

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  • License: MIT License (The MIT License (MIT) Copyright (c) 2016 Daniel Bader Permission is hereby granted, free of charge...)
  • Maintainer: David Tucker
  • Requires: Python >=3.8
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Project description

Mypy static type checker plugin for pytest

See Latest Release on PyPI

Features

  • Runs the mypy static type checker on your source files as part of your pytest test runs.

  • Does for mypy what the pytest-flake8 plugin does for flake8.

  • This is a work in progress – pull requests appreciated.

Installation

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

$ pip install pytest-mypy

Usage

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

$ py.test --mypy test_*.py

Mypy supports reading configuration settings from a mypy.ini file. Alternatively, the plugin can be configured in a conftest.py to invoke mypy with extra options:

def pytest_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

License

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

Issues

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

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

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

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