Let\u2019s create a minimal web application, \u201chello world\u201d. We\u2019ll put it in a file named \u201chello.py\u201d:

import bobo

@bobo.query
def hello():
    return "Hello world!"

This application creates a single web resource, \u201c/hello.html\u201d, that simply outputs the text \u201cHello world\u201d.