I'm working with the version, contained in ubuntu 10.04 j_sch...@neo:~$ sage -version | SAGE Version 3.0.5, Release Date: 2008-07-11 | j_sch...@neo:~$ uname -a Linux neo 2.6.31-22-generic #60-Ubuntu SMP Thu May 27 00:22:23 UTC 2010 i686 GNU/Linux j_sch...@neo:~$ python --version Python 2.6.4
greatz Am 19.06.2010 16:51, schrieb William Stein: > On Sat, Jun 19, 2010 at 7:33 AM, Johannes <dajo.m...@web.de> wrote: > >> i tried the first example in the given link and i get the following error: >> >> sage: V0 = span([[1/2,0,0],[3/2,2,1],[0,0,1]],ZZ) >> --------------------------------------------------------------------------- >> TypeError Traceback (most recent call last) >> >> /home/j_schn14/<ipython console> in <module>() >> >> /usr/lib/python2.5/site-packages/sage/modules/free_module.pyc in span(R, >> gens, check, already_echelonized) >> 349 [1 0 1] >> 350 """ >> --> 351 if len(gens) == 0: >> 352 return FreeModule(R, 0) >> 353 else: >> >> /usr/lib/python2.5/site-packages/sage/rings/integer_ring.so in >> sage.rings.integer_ring.IntegerRing_class.__len__ >> (sage/rings/integer_ring.c:3903)() >> >> TypeError: len() of unsized object >> >> is this a bug, or am I doing something wrong? >> greatz Mad >> > What version of Sage are you using? It works fine in recent versions: > > flat:Library wstein$ sage > ---------------------------------------------------------------------- > | Sage Version 4.4.2, Release Date: 2010-05-19 | > | Type notebook() for the GUI, and license() for information. | > ---------------------------------------------------------------------- > sage: V0 = span([[1/2,0,0],[3/2,2,1],[0,0,1]],ZZ) > sage: > sage: V0 > Free module of degree 3 and rank 3 over Integer Ring > Echelon basis matrix: > [1/2 0 0] > [ 0 2 0] > [ 0 0 1] > -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
