Python Flask SQLAlchemy: Import app.db to /models/model.py is failing

I feel I'm making a rookie error that I can't pin down.

I have the following folder structure

--MyAppRoot\
--app.py
----\models\__init__.py
----\models\models.py
----\models\data_handler.py
----\models\forms.py
----\models\a_few_other_py_files_etc.py

Where my app.py has the usual Flask(__name__) etc and db = SQLAlchemy(app) initialised. Everything works fine, all the imports from the various models py files work fine, usual stuff such as flask forms, wtforms etc.

Inside my data_handler.py file I am running a scraper which utilises Pandas to .send_to_sql however I now need to import db so I can execute a raw SQL query in db.session.execute(query) for a use in a Class but when doing so I get the following error:

Traceback (most recent call last):
  File "C:/Users/me/PythonProjects/MyAppRoot/models/data_handler.py", line 7, in <module>
    from app import db
  File "C:\Users\me\PythonProjects\MyAppRoot\app.py", line 1, in <module>
    from models.forms import (RegisterForm,
ModuleNotFoundError: No module named 'models.forms'; 'models' is not a package

Any help appreciated.