Join Club ShowMeDo to Learn Python!

This series is a part of Club ShowMeDo. Click to learn why you should join our club with a simple monthly subscription.

  • We teach Python and all the cool modules
  • Topics include beginner Python, GUIs, Web and Desktop Apps
  • Long, specially crafted video tutorials just for you
  • Club video tutorials extend our normal Free content
  • Save your time - we've done the research for you
  • Keep your skills up-to-date
  • Learn at your own pace, everything you need is shown to you
  • Over 12 hours of archived material are waiting for you in the club

Name: [008] Kyran Dale
Member: 128 months
Authored: 16 videos
Description: I'm one of the co-founders of Showmedo and an academic researcher by profession. My peripatetic path has taken me from a Philosophy degree via Artificial Intelligence and Evolutionary Robotics to a PhD in Neuroscience. I spent five years in a small room with a colony of reluctant bumble-bees, becomi ...

Using Google's User Service [ID:721] (4/5)

in series: A Gentle Introduction to the Google App Engine Python SDK

(Showmedo is undergoing major changes. To report any problems viewing the videos please email us and include browser and OS specifics. Cheers - Kyran.)

The Google App Engine (GAE) Users service allows your application to integrate with Google user accounts. For example, if a user is logged into their Gmail account, they will be recognized and validated. While most web frameworks provide their own user-management systems the GAE User service has 'out of the box' convenience and leverages Google's experience, at the expense of some control and privacy.

# Using the User Service
import wsgiref.handlers

from google.appengine.api import users
from google.appengine.ext import webapp

class MainPage(webapp.RequestHandler):
  def get(self):
    user = users.get_current_user()

    if user:
      self.response.headers['Content-Type'] = 'text/plain'
      self.response.out.write('Hello, ' + user.nickname())

def main():
  application = webapp.WSGIApplication(
                                       [('/', MainPage)],

if __name__ == "__main__":

#app.yaml config script:

#application: helloworld
#version: 1
#runtime: python
#api_version: 1

#- url: /.*

Got any questions?

Get answers in the ShowMeDo Learners Google Group.

Video statistics:

  • Video's rank shown in the most popular listing
  • Video plays: 0 (since July 30th)
  • Plays in last week: 0
  • Published: 99 months ago

Thank-yous, questions and comments

If this video tutorial was helpful please take some time to say thank-you to the authors for their hard work. Feel free to ask questions. Let the author know why their video tutorial was useful - what are you learning about? Did the video tutorial save you time? Would you like to see more?

You may also want to see our ShowMeDo Google Group to speak to our active users and authors.

Your email address will not be published.

Show some quick comments >>

All comments excluding tick-boxed quick-comments

Very nice video! So are the other parts of this series.

A note though: the video ended too "suddenly". At the end, it was not obvious for me that the video has really ended, I thought that there was some problem with my video player. It wasn't a problem with the first three videos -- firstly because you said what would come in the next video, and secondly because they did not end suddenly.

Keep up the good work and thanks again!

Ok, I see. On the first pass, the app asks you to login because "user" wasn't set. In the else branch we get the registration page that embeds a request back to 'MainPage'.

I need to brush up (google) on how the RequestHandlers, get, and post methods work in HTML.

the showmedo on video blocks example code in many shots, I am a SQL database programmer new to WEB programming. I have developed a Tennis schedulng package which I want to transfer to the WEB. I am trying Google Apps to do this. I hope you will produce a video that shows what you can do and what you can't do with Google Apps.

I need to be able to have a Web Page with many (8) list boxes, 10 combo boxes, 14 commoan buttons, etc. Can I?


Fred Dunfey

Useful, I can see now it is convenient for Google, that programmers use their Google App Engine.

Video published, thanks for contributing to ShowMeDo

Video published, thanks for contributing to ShowMeDo

Showmedo is a peer-produced video-tutorials and screencasts site for free and open-source software (FOSS)- with the exception of some club videos, the large majority are free to watch and download.

how to help » about » faq »

Educating the Open-source Community With Showmedo

Although as important as the software it supports, education and documentation are relatively neglected in the Open-source world. Coders love to code, and explaining how best to use or improve the software tends to be deferred or even sidelined.

At Showmedo we believe the community can play a vital role here and also say thanks for the tools and software that make our lives easier. If you have a piece of software you love or a programming langugage you are enthusiastic about, why not make a screencast showing others how to use it? All the stuff you wish you'd been told, the tips, tricks, insights that would have saved you time and frustration.

Screencasting is easier than you think, and we're happy to help you. You can emailus for advice or just use some of the how-to screencasts on the site. This screencasting learning-pathis a good place to start.

Kudos and Thanks for Kyran

A First wxPython Application

Great video

Lee Broom Suspension lamp Online Sale
70 months ago


Showmedo's development is fairly rapid and bugs will inevitably creep in. If you have any problems please drop us a line using the contact address below. Likewise, any suggestions for improvements to the site are gratefully received.