[New-bugs-announce] [issue1417] Weakref not working properly

MHOOO report at bugs.python.org
Sat Nov 10 13:20:52 CET 2007

New submission from MHOOO:

The following code is not working as expected:
import weakref
class cls1:
	def giveTo( self, to ):
		to.take( self.bla )
	def bla(self ):
class cls2:
	def take( self, what ):
		self.ref = weakref.ref(what)
c1 = cls1()
c2 = cls2()
c1.giveTo( c2 )
print c1.bla
print c2.ref

It prints out:
<bound method cls1.bla of <__main__.cls1 instance at 0x00CA9E18>>
<weakref at 00CAF180; dead>

Why is the weakref pointing to a dead object, when it's still alive?

components: Library (Lib)
files: test2.py
messages: 57348
nosy: MHOOO
severity: major
status: open
title: Weakref not working properly
type: behavior
versions: Python 2.5
Added file: http://bugs.python.org/file8725/test2.py

Tracker <report at bugs.python.org>
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