metaclasses are princess or: how to teach metaclasses to children ?

[Michele Simionato]

class Princess(type):
    def __str__(cls):
         return "I am a %s %s" % (cls.attributes,cls.__name__)
    def kiss(cls):
        if cls.attributes=="small, ugly, poor":
            cls.attributes="tall, beautiful, rich"
        return cls
    kiss=staticmethod(kiss)

class Frog(object):
    __metaclass__=Princess
    attributes="small, ugly, poor"

print Frog

Prince=Princess.kiss(Frog)

print Prince

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In its heart, a Frog is always a Frog.


                              M.