On 18/05/2013 9:59am, Antoine Pitrou wrote:
This PEP proposes to turn CI disposal into the following sequence (new steps are in bold):
1. Weakrefs to CI objects are cleared, and their callbacks called. At this point, the objects are still safe to use.
2. **The finalizers of all CI objects are called.**
How do you know that one of the finalizers will not do something which causes another to fail? Presumably the following would cause an AttributeError to be printed: class Node: def __init__(self): self.next = None def __del__(self): print(self, self.next) del self.next # break Node object a = Node() b = Node() a.next = b b.next = a del a, b gc.collect() Are there are less contrived examples which will cause errors where currently there are none? -- Richard