#10034: Make evaluation possible for Pynac 'hold' objects
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Reporter: kcrisman | Owner: burcin
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.11
Component: symbolics | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Comment (by eviatarbach):
I've thought about this. One option is to use pattern matching to specify
the parts to evaluate, but I don't how the expression could be
reconstructed afterwards.
Another option is to have an argument for providing a list of operators
not to evaluate (I think it's better to have an argument to exclude rather
than include, because it is difficult to find all the operators in Sage,
while finding ones to exclude just involves searching the expression).
Then for the `2 * x * x` example you could just add `operator.mul` to the
excluded operators and it would work.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10034#comment:7>
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