[ python-Bugs-1098985 ] set objects cannot be marshalled

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Bugs item #1098985, was opened at 2005-01-09 11:28
Message generated for change (Comment added) made by greg_ball
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Category: Python Library
Group: Python 2.5
Status: Closed
Resolution: Fixed
Priority: 4
Submitted By: Gregory H. Ball (greg_ball)
Assigned to: Raymond Hettinger (rhettinger)
Summary: set objects cannot be marshalled

Initial Comment:
It would be nice if set objects could be marshalled.
This would require extra code in marshal.c very similar
to that for dictionaries. Since sets can be pickled I
guess this is not critical.


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>Comment By: Gregory H. Ball (greg_ball)
Date: 2005-01-11 13:12

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Thanks for the quick work Raymond!  I see you have added
a test case too.  I am attaching a patch which implements
this change in a different style, based on setobject.h
publicly advertising that v->data is a dictionary for any
set object v.
It passes the new test code (and the rest of the test suite).


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Comment By: Raymond Hettinger (rhettinger)
Date: 2005-01-10 22:03

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Then let things be nice for all.
See Python marshal.c 1.81.

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Comment By: Tim Peters (tim_one)
Date: 2005-01-10 20:51

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Just noting that some people prefer to use marshal instead of 
pickle because unmarshaling can't end up executing arbitrary 
user-defined code (but unpickling can, via arbitrary module 
importing and arbitrary construction of objects of user-
defined classes).  That's really not one of marshal's goals, 
though, so "would be nice" is as strong as it gets.

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Comment By: Guido van Rossum (gvanrossum)
Date: 2005-01-10 19:25

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As the OP says, it would be nice. Let's see if he or someone
else wants it bad enough to submit a patch.

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Comment By: Raymond Hettinger (rhettinger)
Date: 2005-01-10 19:17

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Guido, what to you think about the OP's request?  The need
does not arise for pyc files and pickling takes care of
general persistance needs.   Is there something to be gained?

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