Compatibility list

The stable version of Flake8-AAA is compatible with the following software.

Future versions will maintain this compatibility, unless an item is deprecated.


Works with Python 3.

We fully test against the latest versions of Python 3 - currently that’s 3.6, 3.7 and 3.8.

Python 3.5

Python 3.5 is supported up to v0.7.2

Python 2

Python 2 is supported up to v0.4.0


Works with Flake8 version 3 and later.

We use the newer plugin system implemented in Flake8 v3. This dependency is not specified in because users may only want to use the command line interface.

Check that Flake8-AAA was installed correctly by asking flake8 for its version signature:

$ flake8 --version
3.7.8 (aaa: 0.7.0, mccabe: 0.6.1, pycodestyle: 2.5.0, pyflakes: 2.1.1) CPython 3.6.7 on Linux

The aaa: 0.7.0 part of that output tells you Flake8 found this plugin.


Tests formatted with latest Black version will pass.

The coding style used by Black can be viewed as a strict subset of PEP8.

Given that the AAA pattern is PEP8 compatible it makes sense that Flake8-AAA must work with test code that is formatted with PEP8 compatible formatters. Therefore we’ll maintain Flake8-AAA to pass with AAA-style tests formatted with Black.

This compatibility is pinned by the test examples in the examples/good/black directory - we assert that these tests pass the latest version of Black’s formatting and Flake8-AAA’s linting.


Pytest is fully supported.

To pin this compatibility we use the latest version of Pytest in the Flake8-AAA test suite and lint that test suite with Flake8-AAA (aka. dog fooding).


Python unittest style is supported.

To pin this compatibility we include unittest-style tests in the examples/good directory -