I think the main confusion is in the line:
from app import app
You have a python package (a folder with __init__.py file) named “app”. From this folder, you are now importing the variable “app” that you defined below in __init__.py file:
app = Flask(__name__)
Rename the folder from app to say “myproject”. Then you will call
from myproject import app
Also, you will import views as
from myproject import views