Install and run:

git clone https://github.com/encode/starlette-example.git
cd starlette-example
scripts/install
scripts/run

Open https://127.0.0.1:8000/ in your browser:

Navigate to path that is not routed, eg https://127.0.0.1:8000/nope:

Raise a server error by navigating to https://127.0.0.1:8000/error:

Switch the app = Starlette(debug=True) line to app = Starlette() to see a regular 500 page instead.