My set-up:
Linux Fedora 9, 2.6.27.7-53.fc9.i686
Thinkpad X40
shell = bash (with pretty minimal .bashrc and .bash_profile)
Sage Version 3.2.2, Release Date: 2008-12-18 from a binary, not an
upgrade
I do have a .gaprc and had installed gap before installing sage. I
tried removing .gaprc, but that didn't fix the problem.
By the end of January, I will have a different laptop, running Fedora
10. So almost certainly the problem will disappear for me then. So
this is not to pressing.
About the laplacian bug (really the weighted_adjacency_matrix bug),
could someone else please make a patch? I am travelling non-stop
between semesters now and have not had time to learn how to do this.
Thanks,
Dave
On Jan 7, 6:06 pm, mabshoff <michael.absh...@mathematik.uni-
dortmund.de> wrote:
> On Jan 7, 3:38 pm, davidp <dav...@reed.edu> wrote:
>
> Hi Dave,
>
> > Oops. I take back my last post. Running Sage 3.2.2, I got the
> > following:
>
> > sage: combinations([1,2,3,4],2)
> > ------------------------------------------------------------
> > File "<string>", line 1
> > [ [ 1, 2 ], [ 1, 3 ], [ 1, 4 ], [ 2, 3 ], [ 2, 4 ], [ 3, 4 ] ]
> > gap>
>
> I tried in Sage 3.2, 3.2.1, 3.2.2 and 3.2.3 and it always worked for
> me.
> ^
>
>
>
> > SyntaxError: invalid syntax
>
> > The problem seems to occur on line 1580 of combinat.py:
>
> > 1579 ans=gap.eval("Combinations(%s,%s)"%(mset,ZZ(k))).replace
> > ("\n","")
> > 1580 return eval(ans)
>
> > For the example above:
>
> > sage: gap.eval("Combinations([1,2,3,4],2)")
> > '[ [ 1, 2 ], [ 1, 3 ], [ 1, 4 ], [ 2, 3 ], [ 2, 4 ], [ 3, 4 ] ]\n\x1b
> > [1m\x1b[34mgap> \x1b[0m'
> > sage: eval(gap.eval("Combinations([1,2,3,4],2)").replace("\n",""))
> > ------------------------------------------------------------
> > File "<string>", line 1
> > [ [ 1, 2 ], [ 1, 3 ], [ 1, 4 ], [ 2, 3 ], [ 2, 4 ], [ 3, 4 ] ]
> > gap>
> > ^
> > SyntaxError: invalid syntax
>
> > sage: eval(gap.eval("Combinations([1,2,3,4],2)").replace("\n",""))
> > ------------------------------------------------------------
> > File "<string>", line 1
> > [ [ 1, 2 ], [ 1, 3 ], [ 1, 4 ], [ 2, 3 ], [ 2, 4 ], [ 3, 4 ] ]
> > gap>
> > ^
> > SyntaxError: invalid syntax
>
> > Thanks for any suggestions.
>
> Hmm, this looks like some escape characters from the shell. What shell
> are you using? . What platform is this on? Did you build this Sage
> yourself or is it a binary? Did you upgrade it from a previous release
> of Sage?
>
> Do you have any gap config file around? This problem sounds familiar,
> but I cannot put my finger on it.
>
> > Dave
>
> One last think: Do you have a patch for the laplacian_matrix()
> problem, i.e.http://trac.sagemath.org/sage_trac/ticket/4888or do you
> want someone from our end to make a patch? Robert Miller looked at the
> suggested fix and he agrees that it is the right way to go.
>
> Cheers,
>
> Michael
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