sudo python setup.py install  

# coding=utf-8
from karloop.KarlBaseApplication import BaseApplication  
from karloop.KarlBaseHandler import BaseHandler  


class HelloHandler(BaseHandler):  
    def get(self):  
       return self.response("hello world")  
      

handlers = {
    "/hello": HelloHandler
}


class HelloApplication(BaseApplication):
    def __init__(self):
        super(HelloApplication, self).__init__(handlers=handlers)
        

if __name__ == "__main__":
    application = HelloApplication()
    application.listen(port=8888)
    application.run()

python index.py