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Hello World!

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Problem

How to write hello world with web.py

Solution

import web

urls = ("/.*", "hello")
app = web.application(urls, globals())

class hello:
    def GET(self):
        return 'Hello, world!'

if __name__ == "__main__":
    app.run()

Tip: Make url ending with or without '/' going to the same class.

add the following to the beginning of urls.

'/(.*)/', 'redirect', 

and have the following class to handle those urls.

class redirect:
    def GET(self, path):
        web.seeother('/' + path)