Taller models.py with many Models may be more difficult to maintain than shorter models.py with fewer Models.

There is a limit to how many items a developer can consider when forming a mental model of source code.

It may be time to split an application if models.py is very long.

Are you affected? Check with
pip install django-doctor
.

Configuring this check

Django Doctor will run this check by default. No configuration is needed but the check can be turned on/off using check code tall-models in your pyproject.toml file.

Read more about configuring Django Doctor.