#10595: Vector constructor fails on empty list with no ring given
---------------------------------+------------------------------------------
Reporter: rbeezer | Owner: jason, was
Type: defect | Status: needs_review
Priority: major | Milestone: sage-4.7
Component: linear algebra | Keywords:
Author: Rob Beezer | Upstream: N/A
Reviewer: Dmitrii Pasechnik | Merged:
Work_issues: |
---------------------------------+------------------------------------------
Old description:
> {{{
> sage: vector(QQ,[])
> ()
>
> sage: vector([])
> ---------------------------------------------------------------------------
> TypeError Traceback (most recent call
> last)
>
> /home/sage/sage-4.6.1.rc1/devel/sage-main/<ipython console> in <module>()
>
> /sage/sage-4.6.1.rc1/local/lib/python2.6/site-
> packages/sage/modules/free_module_element.so in
> sage.modules.free_module_element.vector
> (sage/modules/free_module_element.c:3229)()
>
> /sage/sage-4.6.1.rc1/local/lib/python2.6/site-
> packages/sage/modules/free_module_element.so in
> sage.modules.free_module_element.prepare
> (sage/modules/free_module_element.c:3675)()
>
> TypeError: unable to find a common ring for all elements
> }}}
>
> Default ring should be `ZZ` ideally.
New description:
{{{
sage: vector(QQ,[])
()
sage: vector([])
---------------------------------------------------------------------------
TypeError Traceback (most recent call
last)
/home/sage/sage-4.6.1.rc1/devel/sage-main/<ipython console> in <module>()
/sage/sage-4.6.1.rc1/local/lib/python2.6/site-
packages/sage/modules/free_module_element.so in
sage.modules.free_module_element.vector
(sage/modules/free_module_element.c:3229)()
/sage/sage-4.6.1.rc1/local/lib/python2.6/site-
packages/sage/modules/free_module_element.so in
sage.modules.free_module_element.prepare
(sage/modules/free_module_element.c:3675)()
TypeError: unable to find a common ring for all elements
}}}
Default ring should be `ZZ` ideally.
------
Apply both
- trac_10595-vector-constructor-empty-list.patch
- 10595-referee.patch
--
Comment(by jhpalmieri):
To the patchbot: Apply both
- trac_10595-vector-constructor-empty-list.patch
- 10595-referee.patch
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10595#comment:14>
Sage <http://www.sagemath.org>
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