starlette/docs/staticfiles.md

Starlette also includes a StaticFiles class for serving files in a given directory:

StaticFiles

Signature: StaticFiles(directory, check_dir=True)

• directory - A string denoting the directory path
• check_dir - Ensure that the directory exists upon instantiation. Defaults to True

You can combine this ASGI application with Starlette's routing to provide comprehensive static file serving.

from starlette.routing import Router, Mount
from starlette.staticfiles import StaticFiles


app = Router(routes=[
    Mount('/static', app=StaticFiles(directory='static')),
])

Static files will respond with "404 Not found" or "405 Method not allowed" responses for requests which do not match.