tornado一起来-模版渲染
好吧，表示单单输出一句话，好像没什么难度，并且显示也很丑。
那就使用**模版**吧。一听模版是不是瞬间感觉高大上了。（偷笑中）
主要内容参考[《Introduction to Tornado》中文翻译](http://demo.pythoner.com/itt2zh)
现在开始！
poemmaker.py
```
import os.path
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')
verb = self.get_argument('verb')
noun3 = self.get_argument('noun3')
self.render('poem.html', roads=noun1, wood=noun2, made=verb,
difference=noun3)
if __name__ == '__main__':
tornado.options.parse_command_line()
app = tornado.web.Application(
handlers=[(r'/', IndexHandler), (r'/poem', PoemPageHandler)],
template_path=os.path.join(os.path.dirname(__file__), "templates")
)
http_server = tornado.httpserver.HTTPServer(app)
http_server.listen(options.port)
tornado.ioloop.IOLoop.instance().start()
```
再来一个模版index.html
```
<html>
<head><title>Poem Maker Pro</title></head>
<body>
<h1>Enter terms below.</h1>
<form method="post" action="/poem">
<p>Plural noun<br><input type="text" name="noun1"></p>
<p>Singular noun<br><input type="text" name="noun2"></p>
<p>Verb (past tense)<br><input type="text" name="verb"></p>
<p>Noun<br><input type="text" name="noun3"></p>
<input type="submit">
</form>
</body>
</html>
```
poem.html
```
<html>
<head><title>Poem Maker Pro</title></head>
<body>
<h1>Your poem</h1>
<p>Two {{roads}} diverged in a {{wood}}, and I—<br>
I took the one less travelled by,<br>
And that has {{made}} all the {{difference}}.</p>
</body>
</html>
```
看到这样子，表示运气真好。
</body></html>
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