[issue1062277] Pickle breakage with reduction of recursive structures

[Eugene Toder]

Eugene Toder added the comment:

Davis, the possible cases (i.e. recursion via appropriate mutable objects) are already supported, and the impossible cases are, well, impossible. The only open issue is whether to implement better error handling for infinite recursion problems, instead of relying on built-in maximum recursion depth.

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<http://bugs.python.org/issue1062277>
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