#7389: Fallback _point_morphism_class() has wrong signature
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Reporter: wjp | Owner: AlexGhitza
Type: defect | Status: new
Priority: minor | Milestone: sage-4.2.1
Component: algebraic geometry | Keywords:
Work_issues: | Author:
Reviewer: | Merged:
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The default {{{Scheme._point_morphism_class()}}} has a different signature
than the versions in the subclasses of Scheme, causing a {{{TypeError}}}
when it is called instead of the intended {{{NotImplementedError}}}.
Small nonsensical example to trigger it in sage 4.2:
{{{
sage: S = Spec(ZZ)
sage: f = S.identity_morphism()
sage: from sage.schemes.generic.glue import GluedScheme
sage: T = GluedScheme(f,f)
sage: S.hom([1],T)
TypeError: _point_morphism_class() takes exactly 1 non-keyword argument (3
given)
}}}
The attached patch should fix it.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7389>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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