When something errored, it was hard to resurface this back to the user. You had to open the dev tools to check the console for any errors.
Now, PyScript will show a banner with two levels (warning, error) which allow us to both nicely resurface the error and also show warnings that can be closed by the user.
Now, PyScript will show a banner with two levels (warning, error) which allow us to both nicely resurface the error and also show warnings that can be closed by the user.