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We really like web.py but web2py has nothing to do with it. Really. The name is similar by accident.

They are very very different beasts although you can translate web.py code into web2py code.

This is an example of web.py code (not us)

import web

urls = (
      '/(.*)', 'hello'
    )

class hello:        
        def GET(self, name):
            i = web.input(times=1)
            if not name: name = 'world'
            for c in range(int(i.times)):
                print 'Hello,', name+'!'

if __name__ == "__main__": web.run(urls, globals())

which we could translate in web2py as

### in routes.py (optional)
    routes_in=(('/.*','/myapp/default/hello'),)

### in controller default.py
    def hello():
        return dict(times=request.vars.times or 1,name=request.vars.name or 'world')

### in view default/hello.py
    {{extend 'layout.html'}}
    {{for i in range(int(times)):}}Hello, {{=name}}!{{pass}}

Although we would never write code like this where input is not validated! web2py has objects/helpers to build secure validated forms.