By Massimo DiPierro
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Extra info for Web2py Enterprise Web Framework, 2nd Edition
Web2py comes with three applications: SAY HELLO 45 • An admin application, the one you are using right now. • An examples application, with the online interactive documentation and a replica of the web2py official website. • A welcome application. This is the basic template for any other web2py application. It is referred to as the scaffolding application. This is also the application that welcomes a user at startup. Ready-to-use web2py applications are referred to as web2py appliances. You can download many freely available appliances from .
Some of them are reserved keywords and have a special meaning. a 7, 5] Other special operators include getattr and setattr , which define the get and set attributes for the class, and sum and sub , which overload arithmetic operators. For the use of these operators we refer the reader to more advanced books on this topic. We have already mentioned the special operators str and repr . read() hello world Alternatively, you can read in binary mode with "rb", write in binary mode with "wb", and open the file in append mode "a", using standard C notation.
They are created and modified by the application itself. The controllers contain the logic and workflow of the application. Every URL gets mapped into a call to one of the functions in the controllers (actions). py". appadmin provides the database administrative interface; we do not need it now. py" is the controller that you need to edit, the one that is called by default when no controller is specified in the URL. Edit the "index" function as follows: 1 2 def index(): return "Hello from MyApp" Here is what the online editor looks like: Save it and go back to the [EDIT] page.