Python-сообщество

class Image (webapp.RequestHandler):
  def get(self):
    greeting = db.get(self.request.get("img_id"))
    if greeting.avatar:
      self.response.headers['Content-Type'] = "image/png"
      self.response.out.write(greeting.avatar)
    else:
      self.error(404)

class Image (webapp.RequestHandler):
  def get(self, img_id):
      # get image and fill self.response

application = webapp.WSGIApplication([
    # ...
    (r'/img/(\w+)\.png', Image),
])

class Images (webapp.RequestHandler):
  def get(self, imgs_id):
    greeting = db.get(self.request.get("imgs_id"))
    if greeting.fullsize:
      self.response.headers['Content-Type'] = "image/jpeg"
      self.response.out.write(greeting.fullsize)
    else:
      self.response.out.write("No image")

application = webapp.WSGIApplication(
                                     [('/', MainPage),
                                      ('/sign', Guestbook),
                                      ('/img', Image),
                                      (r'/imgs_id/(\w+)\.jpg', Images),
                                      ('/add', AddNews)],
                                     debug=True)
def main():
  run_wsgi_app(application)

if __name__ == "__main__":
  main()

{% for greeting in greetings %}
		<a class="zoom" rel="group" title="{{ greeting.title }}" href="imgs_id/{{ greeting.key }}.jpg"><img src="img?img_id={{ greeting.key }}" alt="" /></a>
{% endfor %}

 greeting = db.get(self.request.get("imgs_id"))