[Chicago] class continued, or metaclassing + framehackery, or an exercise in never using this because it's BAD... but fun.

[Pete]

I don't get it.

On Mar 27, 2008, at 5:07 PM, Brantley Harris wrote:
> import sys
>
> class ContinueMeta(type):
>    def __new__(cls, name, bases, dct):
>        if name == 'continued':
>            return type.__new__(cls, name, bases, dct)
>        existing = sys._getframe(1).f_locals[name]
>        for k, v in dct.items():
>            setattr(existing, k, v)
>        return existing
>
> class continued(object):
>    __metaclass__ = ContinueMeta
>
> ### Testing ###
> class Widget(object):
>    def __init__(self):
>        print "Widget created!"
>
> class Widget(continued):
>    def hello(self):
>        print "Hello world!"
>
> ----------
>>>> w = Widget()
>>>> w.hello()
> Widget created!
> Hello world!
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Pete
pfein at pobox.com