[issue1918] weak references are removed before __del__ is called.

[Guido van Rossum]

Guido van Rossum added the comment:

Georg, can you update the docs?  Weak references *to* an object are
cleared before the object's __del__ is called, to ensure that the weak
reference callback (if any) finds the object healthy.

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assignee:  -> georg.brandl
nosy: +georg.brandl, gvanrossum
status: pending -> open
versions: +Python 2.6, Python 3.0

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