How do you submit a form to an app engine python application without refreshing the sending page?

As a newbie to app engine and python I can follow the examples given by Google and have created a python application with a template HTML page where I can enter data, submit it to the datastore and by reading back the data, just sent, recreate the sending page so I can continue adding data and store again. However wh开发者_运维问答at I would like to do is submit the data, have it stored in the datastore without the sending page being refreshed. It seems like a waste of traffic to have all the data sent back again.

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Sounds like you want to look into AJAX. The simplest way to do this is probably to use the ajax functions in one of the popular Javascript libraries, like jQuery.

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AJAX. If you want a specific resource concerning AppEngine -

http://code.google.com/appengine/articles/rpc.html (uses Python) is very good.

Here is a good link to understand Communication with Server on Google App Engine

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Have a look at Pyjamas pyjs.org

It's a Python Compiler for web browsers. Write your client side in Python and Pyjamas will compile it into JavaScript.