""" Tutorial - Object inheritance You are free to derive your request handler classes from any base class you wish. In most real-world applications, you will probably want to create a central base class used for all your pages, which takes care of things like printing a common page header and footer. """ import cherrypy class Page: # Store the page title in a class attribute title = 'Untitled Page' def header(self): return ''' <html> <head> <title>%s</title> <head> <body> <h2>%s</h2> ''' % (self.title, self.title) def footer(self): return ''' </body> </html> ''' # Note that header and footer don't get their exposed attributes # set to True. This isn't necessary since the user isn't supposed # to call header or footer directly; instead, we'll call them from # within the actually exposed handler methods defined in this # class' subclasses. class HomePage(Page): # Different title for this page title = 'Tutorial 5' def __init__(self): # create a subpage self.another = AnotherPage() def index(self): # Note that we call the header and footer methods inherited # from the Page class! return self.header() + ''' <p> Isn't this exciting? There's <a href="./another/">another page</a>, too! </p> ''' + self.footer() index.exposed = True class AnotherPage(Page): title = 'Another Page' def index(self): return self.header() + ''' <p> And this is the amazing second page! </p> ''' + self.footer() index.exposed = True cherrypy.tree.mount(HomePage()) if __name__ == '__main__': import os.path thisdir = os.path.dirname(__file__) cherrypy.quickstart(config=os.path.join(thisdir, 'tutorial.conf'))