Tornado - Options - 4

config.py

port="8000"
host="localhost"
databse="mydb"
user="root"
password="root"

tornadooptions_3.py

from tornado.options import define, options
import tornado.web
import tornado.database

define("port", default="8888")

class DBHandler(tornado.web.RequestHandler):
        def get(self):
                self.write("Main")

application = tornado.web.Application([
        (r"/db", DBHandler),
        ], debug=True)

if __name__ == '__main__':
        tornado.options.parse_config_file("config.py")
        application.listen(options.port)
        tornado.ioloop.IOLoop.instance().start()