#9004: __cmp__ in sage/sets/set.py doesn't do what it's supposed to do.
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Reporter: fbissey | Owner: AlexGhitza
Type: defect | Status: new
Priority: minor | Milestone: sage-4.4.3
Component: algebra | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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According to the comments in the code:
-----
Compare self and right.
If right is not a Set compare types. If right is also a Set,
returns comparison on the underlying objects.
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But that is not what is currently done. In the case where
right is not a Set (more accurately a "Set_object" that's
possibly another issue) the following is evaluated:
{{{
cmp(type(right), type(Set_object))
}}}
The correct thing would be to compare type(right) with
the type "Set_object" [which is type(self)] not the type
'''of''' Set_object.
Patch to follow.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9004>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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