[Django:] Organizing models in a package/app by splitting models.py into several files

Django docs suggest this method to organize models in a package/app by splitting models.py into several files. However, it's worth noting that:

1. This method works only when at max 1 model is defined per file;
2. In the app/models/__init__.py,   you'll need to import every individual model class from every file created inside app/models/.
   Say, you organized models like this:
   
   Then, your PlanningDteApp/models/__init__.py would look like this:
3. You'd still be able to import all models in app/admin.py by doing from .models import *
4. You'd still be able to import all models of an app (App1) into another app (App2) by doing: 
   from App1.models import * 

[Learnings:] In Django, file & folder names essentially act as namespaces/paths in their own right and you'd need to use the entire namespace/path to get to the desired class.

Useful references:

• https://docs.djangoproject.com/en/4.0/topics/db/models/#organizing-models-in-a-package
• https://stackoverflow.com/questions/6336664/split-models-py-into-several-files