"""
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'