A curated list of awesome flake8 extensions.

Inspired after reading a post.

• Clean code
• Copyrights
• Documentations
• Enhancement for flake8
• Flake8 frameworks
• Imports
• Security
• Testing
• Type annotations

Extensions for clean code at your project.

• cohesion - Extension for measuring Python class cohesion.
• flake8-2020 - Plugin which checks for misuse of sys.version or sys.version_info.
• flake8-alfred - Alfred is a flake8 plugin to warn on unsafe/obsolete symbols.
• flake8-black - Plugin to run black for checking Python coding style.
• flake8-broken-line - Plugin to forbid backslashes (\) for line breaks.
• flake8-bugbear - Finding likely bugs and design problems in your program.
• flake8-builtins - Check for python builtins being used as variables or parameters.
• flake8-coding - Adds coding magic comment checks (coding:) to flake8.
• flake8-commas - Enforcing trailing commas in python.
• flake8-comprehensions - Helps you write better list/set/dict comprehensions.
• flake8-debugger - Debug statement checker.
• flake8-django - Plugin for Django projects.
• flake8-eradicate - Plugin to find commented out or dead code.
• flake8-executable - Plugin for checking executable permissions and shebangs.
• flake8-fixme - Check for FIXME, TODO and other temporary developer notes.
• flake8-logging-format - Validate (lack of) logging format strings.
• flake8-mutable - Extension for mutable default arguments.
• flake8-mypy - Plugin for flake8 integrating Mypy.
• flake8-pep3101 - Checks for old string formatting.
• flake8-pie - Extension that implements misc. lints.
• flake8-print - Check for print statements in python files.
• flake8-printf-formatting - Plugin which forbids printf-style string formatting.
• flake8-pyi - Plugin for Flake8 that provides specializations for type hinting stub files.
• flake8-pytest-style - Plugin checking common style issues or inconsistencies with pytest-based tests.
• flake8-requirements - Package requirements checker.
• flake8-quotes - Extension for checking quotes in python.
• flake8-scrapy - Plugin to catch common issues on Scrapy spiders.
• flake8-sql - Plugin that checks SQL code against opinionated style rules.
• flake8-spellcheck - Spellcheck variables, classnames, comments, docstrings etc.
• flake8-strict - Checks Python code against a set of opinionated style rules.
• flake8-string-format - Check that indexed parameters are used in strings.
• flake8-todo - Check for TODO notes.
• flake8-variables-names - Extension that helps to make more readable variables names.
• flake8-walrus - Plugin which forbids assignment expressions (the walrus operator).
• jupyterlab-flake8 - Jupyterlab python linter for notebooks and text files using flake8.
• pandas-vet - Plugin that provides opinionated linting for pandas code.
• pep8-naming - Check the PEP-8 naming conventions.
• flake8-cognitive-complexity - Extension for flake8 that validates cognitive functions complexity.
• flake8-functions - Plugin for validation of function parameters (length, complexity, etc).
• flake8-expression-complexity - Plugin to validate expressions complexity.
• flake8-use-fstring - Jump-start into modern Python by forcing yourself to use f-strings.

Extensions for copyright at your project

• flake8-copyright - Adds copyright checks to flake8.
• flake8-ownership - Checker for assuring that author, copyright, and license are specified in source files.

Extensions for documentations at your project.

• darglint - Check that the docstring description matches the definition.
• flake8-docstrings - Include checks provided by pep257.
• flake8-markdown - Lints Python code blocks in Markdown files using flake8.
• flake8-rst-docstrings - Validate Python docstrings as reStructuredText (RST).
• flake8-rst - Checks on code in *.rst files or in docstrings.

Extensions for flake8 plugin

• flake8-polyfill - A tiny package that provides the poly fill for Flake8 plugins trying to support Flake8 2.x and Flake8 3.x.
• flakehell - Wrapper to make it nice, legacy-friendly, and configurable.

Frameworks for flake8 at your project

• nitpick - Enforce the same lint configuration (flake8, isort, mypy, pylint) across multiple Python projects.
• wemake-python-styleguide - The strictest and most opinionated python linter ever.

Extensions managing imports for your project.

• flake8-future-import - Extension to check imports.
• flake8-import-order-spoqa - Spoqa's import order style for flake8-import-order.
• flake8-import-order - Include checks import order against various Python Style Guides.
• flake8-import-style - Plugin to ensure explicit module imports.
• flake8-isort - Plugin that integrates isort.
• flake8-tidy-imports - Extension that helps you write tidier imports.
• flake8-absolute-import - Plugin to require absolute imports.

Extensions for security of your code.

• Dlint - Tool for encouraging best coding practices and helping ensure Python code is secure.
• flake8-bandit - Automated security testing using bandit.

Extensions for testing at your project.

• flake8-aaa - Lints tests against the Arrange Act Assert pattern.
• flake8-assertive - Unittest assert method checker.
• flake8-mock - Provides checking mock non-existent methods.
• flake8-pytest - Enforces to use pytest-style assertions.
• flake8-pytestrail - Checks TestRail test case IDs.

Extensions for type annotations at your project.

• flake8-annotations-complexity - Plugin to validate annotations complexity.
• flake8-annotations-coverage - Plugin to validate annotations coverage.
• flake8-annotations - Plugin for flake8 to check for presence of type annotations in function definitions.
• flake8-typing-imports - Plugin which checks that typing imports are properly guarded.

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