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A flake8 extension that checks for type annotations coverage

Project description


Build Status Maintainability Test Coverage

An extension for flake8 to report on files with a lot of code without type annotations.

This is mostly useful when you add type annotations to existing large codebase and want to know if new code in annotated modules is annotated.

Minimal annotations coverage percentage for each file can be configured via --min-coverage-percents option, default is 75.

Function is treated as annotated if it has annotation for at least one argument or return type. This is enough for mypy to threat the function not as dynamically typed.


pip install flake8-annotations-coverage


Sample file:


def annotated_function(some_arg: int):

def unannotated_function():


$ flake8 TAE001 too few type annotations

Error codes

Error code Description
TAE001 Too few type annotations in file


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  1. Create an issue with bug you found or proposal you have. Wait for approve from maintainer.
  2. Create a pull request. Make sure all checks are green.
  3. Fix review comments if any.
  4. Be awesome.

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