47 lines
767 B
Python
47 lines
767 B
Python
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"""
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A module for externalized finalizers.
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"""
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import weakref
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garbageKey = 0
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def callbackFactory(num, fins):
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def _cb(w):
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del refs[num]
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for fx in fins:
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fx()
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return _cb
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refs = {}
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def register(inst):
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global garbageKey
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garbageKey += 1
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r = weakref.ref(inst, callbackFactory(garbageKey, inst.__finalizers__()))
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refs[garbageKey] = r
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if __name__ == '__main__':
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def fin():
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print 'I am _so_ dead.'
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class Finalizeable:
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"""
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An un-sucky __del__
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"""
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def __finalizers__(self):
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"""
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I'm going away.
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"""
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return [fin]
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f = Finalizeable()
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f.f2 = f
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register(f)
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del f
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import gc
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gc.collect()
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print 'deled'
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