#13739: more informative error message from multiplication of symbolic
expressions
---------------------------+------------------------------------------------
Reporter: burcin | Owner: burcin
Type: enhancement | Status: new
Priority: minor | Milestone: sage-5.6
Component: symbolics | Keywords:
Work issues: | Report Upstream: N/A
Reviewers: | Authors: Burcin Erocal
Merged in: | Dependencies:
Stopgaps: |
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The error returned by multiplication of symbolic expressions is hard coded
to `ArithmeticError` in the Cython wrappers (`sage/libs/ginac.pxd`). Since
the time that was written, Cython got far better at handling errors, so
this is not necessary. Removing this directive actually allows us to
return more informative error messages. For example:
{{{
sage: t = GF(5)(3)
sage: u = GF(7)(4)
sage: var('y')
y
sage: e = t*x + u*y
sage: t*e
Traceback (most recent call last):
...
TypeError: unsupported operand parent(s) for '*': 'Finite Field of size 7'
and 'Finite Field of size 5'
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13739>
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