You're on the right track.  A web service works very similarly to a web
application, except instead of serving UI to a browser, it uses a protocol
based on HTTP that describes the structure of requests and responses that
make up the interaction between the client and the service.  You can use a
Python WSGI app on App Engine for a web service.  The details depend on
which protocol you wish to use.  There are several common protocols to
choose from, or you could invent your own HTTP-based format if you control
both the client and the service.  Search the web for information on REST and
SOAP, and general information about web services.
-- Dan

On Fri, Jan 9, 2009 at 6:27 AM, arnie <parvez...@rediffmail.com> wrote:

>
> Hi all
> I am using google app engine sdk to develop a python web service. I am
> totally new to both google app engine sdk and python so struggling
> hard to create a simple python web service.
> Is creating a wsgi application using google app engine sdk [in python]
> with no user interface is a web service?
> If No, then can anybody suggest steps to create a simple web service?
> If Yes, then a sub question how can i return a collection of data
> containing say FirstName, LastName, Age, Address to the client?
> Please any body can help
> Thanks
> arnie
>
> >
>

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