# Setuptools integration Upon installation, isort enables a `setuptools` command that checks Python files declared by your project. Running `python setup.py isort` on the command line will check the files listed in your `py_modules` and `packages`. If any warning is found, the command will exit with an error code: ```bash $ python setup.py isort ``` Also, to allow users to be able to use the command without having to install isort themselves, add isort to the setup\_requires of your `setup()` like so: ```python setup( name="project", packages=["project"], setup_requires=[ "isort" ] ) ```