Access resource folder from .whl file

Questions and Help
#1

I want to pack a sanic project into .whl or .zip file. File structure:

-- my_project
  L app.py
  L static
    L __init__.py
    L index.html
    L abc.js
    L abc.css

to access static file resources, I changed the following line

app.static('/', './static/index.html', content_type="text/html; charset=utf-8")

to:

import importlib.resources
app.static('/', importlib.resources.path('my_project.static', 'index.html'), content_type="text/html; charset=utf-8")

Question: how do I change the following line to access folders?

app.static('/static', './static/')

folders seems to be recognized by importlib.resources as NOT resources

importlib.resources.is_resource('my_project.static', 'index.html') # True
importlib.resources.is_resource('my_project.static', '')  # False
importlib.resources.is_resource('my_project', 'static')  # False