#13691: Graph.has_homomorphism_to
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Reporter: ncohen | Owner: jason, ncohen, rlm
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.5
Component: graph theory | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: Nathann Cohen | Merged in:
Dependencies: | Stopgaps:
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Changes (by ncohen):
* status: needs_work => needs_review
Comment:
Ok, patch updated... But I don't get something : how come the error was
{{{
File "mip.pyx", line 2083, in sage.numerical.mip.Sum
(sage/numerical/mip.c:10864)
File "element.pyx", line 332, in
sage.structure.element.Element.__getattr__ (sage/structure/element.c:3523)
File "misc.pyx", line 204, in
sage.structure.misc.getattr_from_other_class (sage/structure/misc.c:1509)
AttributeError: 'sage.numerical.linear_functions.LinearFunction'
object has no attribute 'sum'
}}}
(hence it came from the Sum function, hence the function still exists in
Sage and can be imported) while it cannot be used with the new variables ?
Why does it still exist after all your patches to replace the LP's
symbolics ? `O_o`
Nathann
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13691#comment:8>
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