Install

pip install flake8
pip install flake8-builtins
pip install pytest-flake8

Run

pytest --flake8 .

If you'd like to run the static analysis on the directory where you have the tests files, and if you want the test-run to only include the flake8 tests then you need a way to exclude all the other tests. For this I can recommend you use a fake marker. That is, using -m qqrq you tell pytest that only run the test-functions that have a marker "qqrq". Hopefully none of your tests will use this marker and thus none of your tests will run.

Only the flake8 static code analysis.

pytest --flake8 -m qqrq .

Configure by including the following in the setup.cfg file in the root of your project.

{% include file="examples/setup-with-flake8.cfg" %}

Flake already includes PEP8, so the following is only needed if for some reason you cannot use flake8:

pip install pytest-pep8

{% include file="examples/setup-with-pep8.cfg" %}

• Reducing cyclomatic complexity
• hfcca
• radon
• Algorithms

data = 42
other = "Data: {}".format(data)

Converted to:

data = 42
other = "Data: {data}"

forgetting the "f" of the f-string. Now we have a variable called data that is not in use. Flake8 will report: F841 local variable 'data' is assigned to but never used