#4822: [with patch, under review] Tweak to the error message for EllipticCurve
-----------------------------+----------------------------------------------
Reporter: ljpk | Owner: davidloeffler
Type: enhancement | Status: new
Priority: minor | Milestone: sage-4.1.2
Component: elliptic curves | Keywords:
Reviewer: | Author:
Merged: |
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Comment(by wuthrich):
The patch is ok (so far only tested without the optional package). I will
test it with it later today.
Maybe while we are at it I could suggest that the same change is done to
{{{cremona_label()}}}.
This is without the optional package:
{{{
sage: E= EllipticCurve([3,10])
sage: E.cremona_label()
---------------------------------------------------------------------------
RuntimeError Traceback (most recent call
last)
/home/chrigu/.sage/temp/linux_ljo8/12909/_home_chrigu__sage_init_sage_0.py
in <module>()
/usr/local/sage/local/lib/python2.6/site-
packages/sage/schemes/elliptic_curves/ell_rational_field.pyc in
cremona_label(self, space)
3305 X = self.database_curve()
3306 except RuntimeError:
-> 3307 raise RuntimeError, "Cremona label not known for
%s."%self
3308 self.__cremona_label = X.__cremona_label
3309 return self.cremona_label(space)
RuntimeError: Cremona label not known for Elliptic Curve defined by y^2 =
x^3 + 3*x + 10 over Rational Field.
sage: E.conductor()
44928
}}}
Chris.
ps : 'I don't know if there is an official 'under review'.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4822#comment:4>
Sage <http://sagemath.org/>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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