CS253 Udacity Problem Set 2

Rot13.py

import webapp2,cgi

form='''<form method="post">
<textarea name="text">
%(text)s
</textarea>
<input type="submit">
</form>
'''

def escape_html(s):
    return cgi.escape(s, quote = True)
  
def rot13(text):
	return text.encode('rot13')

class MainPage(webapp2.RequestHandler):
    def write_form(self, text="" ):
        self.response.out.write(form %{"text":escape_html(text)})

    def get(self):
        self.write_form()

    def post(self):
        t=rot13(self.request.get('text'))
        self.write_form(t)
		
app = webapp2.WSGIApplication([('/', MainPage)],debug=True)