Lint Python with PyLint.

For example:

docker run --rm -v $(pwd)/example:/app/code dcycle/python-lint:2 --help
docker run --rm -v $(pwd)/example:/app/code dcycle/python-lint:2 ./code
find . -name "*.py" -print0 | tr '\n' '\0' | xargs -0 -I '$' docker run --rm -v $(pwd):/app/code dcycle/python-lint:2 /app/code/"$"

To ignore a warning, place a comment before the offending line:

# pylint: disable=E0401
...

See this project on the Docker Hub.