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