WTForms extensions for Tornado.

import tornado.ioloop
import tornado.web
from wtforms.fields import IntegerField
from wtforms.validators import DataRequired
from wtforms_tornado import Form
class SumForm(Form):
 a = IntegerField(validators=[DataRequired()])
 b = IntegerField(validators=[DataRequired()])
class SumHandler(tornado.web.RequestHandler):
 def get(self):
 self.write("Hello, world")
 def post(self):
 form = SumForm(self.request.arguments)
 if form.validate():
 self.write(str(form.data['a'] + form.data['b']))
 else:
 self.set_status(400)
 self.write("" % form.errors)
application = tornado.web.Application([
 (r"/", SumHandler),
])
if __name__ == "__main__":
 application.listen(8888)
 tornado.ioloop.IOLoop.instance().start()

You can to use pip to install WTForms-Tornado:

$ pip install wtforms-tornado

Or using last source:

$ pip install git+git://github.com/puentesarrin/wtforms-tornado.git

Or manually, download the latest source from PyPI:

$ tar xvzf wtforms-tornado-$VERSION.tar.gz
$ cd wtforms-tornado-$VERSION
$ python setup.py build
$ sudo python setup.py install