Validation.py

#!/usr/bin/env python
#
# Copyright 2007 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import webapp2

form="""
<form method="post">
    What is your birthday?
    <br>
    <label>
        Month
        <input type="text" name="month">
    </label>
    <label>
        Day
        <input type="text" name="day">
    </label>
    <label>
        Year
        <input type="text" name="year">
    </label>

    <br>
    <br>
    <input type="submit" value="Submit">
</form>
"""

class MainHandler(webapp2.RequestHandler):
    def get(self):
        self.response.out.write(form)

    def post(self):
        self.response.out.write("Thanks! That's a totally valid day!")

app = webapp2.WSGIApplication([('/', MainHandler)], debug=True)