#19134: Inconsistency in matrix()
------------------------------+----------------------------
Reporter: mmezzarobba | Owner:
Type: defect | Status: new
Priority: minor | Milestone: sage-6.9
Component: linear algebra | Keywords:
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
------------------------------+----------------------------
{{{
sage: matrix(2, 3, [])
---------------------------------------------------------------------------
TypeError Traceback (most recent call
last)
<ipython-input-11-2927290cdaf3> in <module>()
----> 1 matrix(Integer(2), Integer(3), [])
/home/marc/opt/sage/local/lib/python2.7/site-
packages/sage/matrix/constructor.pyc in _matrix_constructor(*args, **kwds)
647
648 if nrows > 0 and ncols > 0 and ring is None:
--> 649 entries, ring = prepare(entries)
650
651 elif isinstance(args[0], dict):
/home/marc/opt/sage/local/lib/python2.7/site-
packages/sage/matrix/constructor.pyc in prepare(w)
794 TypeError: unable to find a common ring for all elements
795 """
--> 796 if 0 == len(w):
797 return Sequence([], rings.ZZ), rings.ZZ
798 entries = Sequence(w)
TypeError: object of type 'int' has no len()
}}}
Compare:
{{{
sage: matrix(ZZ, 2, 3, [])
[0 0 0]
[0 0 0]
sage: matrix(2, 3, [1])
...
ValueError: entries has the wrong length
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/19134>
Sage <http://www.sagemath.org>
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