Here’s a very simple code written in Python 2.7 and webapp2 on Google App Engine that does memcaching. It is possibly the easiest example I could think of, that I could implement memcaching on Google App Engine.
The main confusion which arises when one starts to look into memcaching is that Google fails to show that memecaching has to be done after instantiating a memcache client object.
The source code for this application is available here and is self explanatory.
Questions, comments, doubts are welcome.