Tornado，表单处理，一样在行

import os.path
import random

import tornado.httpserver
import tornado.ioloop
import tornado.options
import tornado.web

from tornado.options import define, options
define("port", default=8000, help="run on the given port", type=int)

class IndexHandler(tornado.web.RequestHandler):
    def get(self):
        self.render('index.html')

class PoemPageHandler(tornado.web.RequestHandler):
    def post(self):
        noun1 = self.get_argument('noun1')
        noun2 = self.get_argument('noun2')
        noun3 = self.get_argument('noun3')
        verb = self.get_argument('verb')
        self.render('poem.html', roads=noun1, wood=noun2,
                    made=verb, defference=noun3)

class MungedPageHandler(tornado.web.RequestHandler):
    def map_by_first_letter(self, text):
        mapped = dict()
        for line in text.split('\r\n'):
            for word in [x for x in line.split(' ') if len(x) > 0]:
                if word[0] not in mapped:
                    mapped[word[0]] = []
                mapped[word[0]].append(word)
        return mapped

    def post(self):
        source_text = self.get_argument('source')
        text_to_change = self.get_argument('change')
        source_map = self.map_by_first_letter(source_text)
        change_lines = text_to_change.split('\r\n')
        self.render('munged.html', source_map=source_map,
                    change_lines=change_lines,
                    choice=random.choice)
        

if __name__ == "__main__":
    tornado.options.parse_command_line()
    app = tornado.web.Application(
        handlers=[
            (r"/", IndexHandler),
            # (r"/poem", PoemPageHandler),
            (r"/poem", MungedPageHandler),
            ],
        template_path=os.path.join(os.path.dirname(__file__), "templates"),
        static_path=os.path.join(os.path.dirname(__file__), "static"),
        debug=True,
        )
    http_server = tornado.httpserver.HTTPServer(app)
    http_server.listen(options.port)
    tornado.ioloop.IOLoop.instance().start()