Get path relative to executed flask app

Question

In my flask app I recreate a sqlite database at every start.
For this I use code as shown on the official webpage

My project structure looks like this

Answer 1

This exact use case happens to be the example used in the documentation for flask's open_resource API call as well as the blueprint documentation linked in your question.

Specifically, the reference doc says:

To see how this works, consider the following folder structure:

/myapplication.py 
     /schema.sql 
     /static
         /style.css 
     /templates
         /layout.html
         /index.html 

If you want to open the schema.sql file you would do the following:

 with app.open_resource('schema.sql') as f:
     contents = f.read()
     do_something_with(contents)