#19225: cartesian product of algebra has troubles with base_ring
------------------------------+------------------------
Reporter: dkrenn | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.9
Component: categories | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by dkrenn):
{{{
--- a/src/sage/structure/category_object.pyx
+++ b/src/sage/structure/category_object.pyx
@@ -623,10 +623,6 @@ cdef class CategoryObject(sage_object.SageObject):
category) so as not to pollute the namespace of all
category objects.
"""
+ try:
+ return super(CategoryObject, self).base_ring()
+ except AttributeError:
+ pass
return self._base
}}}
solves this bug, but then
{{{
File "src/sage/categories/homset.py", line 596, in
sage.categories.homset.Homset.__init__
Failed example:
MyHomset(ZZ^3, ZZ^3, base = QQ).base_ring()
Expected:
Rational Field
Got:
Integer Ring
}}}
{{{
File "src/sage/categories/modules.py", line 519, in
sage.categories.modules.Modules.Homsets.ParentMethods.base_ring
Failed example:
H.base_ring.__module__
Expected nothing
Got:
'sage.categories.modules'
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/19225#comment:1>
Sage <http://www.sagemath.org>
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