[issue1062277] Pickle breakage with reduction of recursive structures

Change by Daniel Diniz : -- versions: +Python 3.11 -Python 3.5 ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscrib

[issue1062277] Pickle breakage with reduction of recursive structures

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 relyin

[issue1062277] Pickle breakage with reduction of recursive structures

Davis Herring added the comment: Re msg110868: it's impossible to resolve a __reduce__ loop that involves only immutable intermediate objects (including none at all): class Direct: def __reduce__(self): return id,(self,) # obviously impossible class Indirect: # Can't create either the new o

[issue1062277] Pickle breakage with reduction of recursive structures

Alexander Belopolsky added the comment: Problem "B" has been resolved, but problem "A" is still there. Python 3.4.1 (default, Jun 29 2014, 15:26:46) [GCC 4.4.7 20120313 (Red Hat 4.4.7-4)] on linux Type "help", "copyright", "credits" or "license" for more information. >>> class C: ... def __i

[issue1062277] Pickle breakage with reduction of recursive structures

Changes by Eugene Toder : -- versions: +Python 3.3, Python 3.4 -Python 3.1 ___ Python tracker ___ ___ Python-bugs-list mailing list

[issue1062277] Pickle breakage with reduction of recursive structures

Eugene Toder added the comment: To recap, the issue is that pickle doesn't handle recursion via reduce arguments (i.e. arguments to the constructor function as returned in 2nd element of the tuple from __reduce__). This leads to 2 kind of effects: class C: def __init__(self, x=None):

[issue1062277] Pickle breakage with reduction of recursive structures

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[issue1062277] Pickle breakage with reduction of recursive structures

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[issue1062277] Pickle breakage with reduction of recursive structures

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[issue1062277] Pickle breakage with reduction of recursive structures

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[issue1062277] Pickle breakage with reduction of recursive structures

Changes by Mark Lawrence : -- type: feature request -> behavior versions: +Python 3.1 ___ Python tracker ___ ___ Python-bugs-list ma

[issue1062277] Pickle breakage with reduction of recursive structures

Alexander Belopolsky added the comment: As I explained in msg110617 under issue9269, it is possible that we can do better than simply detect reduce cycles and bail out. I am torn between two options: 1. Reject this patch and wait until a proper solution is found. 2. Admit that better is the

[issue1062277] Pickle breakage with reduction of recursive structures

Changes by Terry J. Reedy : -- components: +Library (Lib) -Interpreter Core ___ Python tracker ___ ___ Python-bugs-list mailing list

[issue1062277] Pickle breakage with reduction of recursive structures

Alexander Belopolsky added the comment: The issue is still present in py3k. Attaching an updated patch with tests only. Is this the same as issue998998? -- assignee: -> belopolsky nosy: +alexandre.vassalotti, belopolsky stage: -> needs patch versions: +Python 3.2 Added file: http:/

[issue1062277] Pickle breakage with reduction of recursive structures

Daniel Diniz added the comment: Patch has test, can someone try it? I think it might be fixed already. -- nosy: +ajaksu2 type: -> feature request versions: +Python 2.7 ___ Python tracker ___