import tornado.ioloop
import tornado.web

class IndexHander(tornado.web.RequestHandler):
    def get(self):
        self.write("hello world")

c21ce5b6b3ef29ff28eff540ece57948e5126747
<mask token>

<mask token>


class IndexHander(tornado.web.RequestHandler):
    <mask token>

<mask token>


class IndexHander(tornado.web.RequestHandler):

    def get(self):
        self.write('hello world')

import tornado.ioloop
import tornado.web


class IndexHander(tornado.web.RequestHandler):

    def get(self):
        self.write('hello world')

import tornado.ioloop
import tornado.web

class IndexHander(tornado.web.RequestHandler):
    def get(self):
        self.write("hello world")
