#9556: Dynamic attributes for symbolic expressions
--------------------------------------------------------------+-------------
Reporter: SimonKing | Owner:
Type: enhancement | Status:
closed
Priority: major | Milestone:
sage-5.11
Component: symbolics | Resolution:
fixed
Keywords: symbolic expression dynamic attribute sd48 | Work issues:
Report Upstream: N/A | Reviewers:
Volker Braun
Authors: Burcin Erocal, Simon King, Mike Hansen | Merged in:
sage-5.11.beta3
Dependencies: | Stopgaps:
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Comment (by vbraun):
As discussed with Burcin, patch needs to move to a different ticket.
Also, unpacking goes too far and doesn't let me preserve SR objects. This
leads to funny behavior for constant functions etc::
{{{
sage: o = (SR(1), x)
sage: map(type, o)
[sage.symbolic.expression.Expression, sage.symbolic.expression.Expression]
sage: o = SR._force_pyobject(o)._unpack_operands()
sage: map(type, o)
[sage.rings.integer.Integer, sage.symbolic.expression.Expression]
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9556#comment:15>
Sage <http://www.sagemath.org>
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