Flask-Imp's main purpose is to help simplify the importing of blueprints, resources, and models. It has a few extra features built in to help with securing pages and password authentication.
https://cheesecake87.github.io/flask-imp/
Create a new project folder and navigate to it.
# Linux
cd /path/to/project-folder
# Windows
cd C:\path\to\project-folder
Linux / MacOS
python3 -m venv venv
source venv/bin/activate
Windows
python -m venv venv
.\venv\Scripts\activate
pip install flask-imp
flask-imp init