This is perhaps related, but I found that using one-line permutation
notation is rather dangerous. It would be nice to have some more input
checking here, perhaps with an optional check=True argument to switch it off
if you have to:
sage: Permutation([3,2]) # invalid one-line notation
[3, 2]
sage: _.cycle_string()
---------------------------------------------------------------------------
IndexError Traceback (most recent call last)
/home/vbraun/<ipython console> in <module>()
/home/vbraun/Sage/sage/local/lib/python2.6/site-packages/sage/combinat/permutation.pyc
in cycle_string(self, singletons)
369 '(1,2)(3)'
370 """
--> 371 cycles = self.to_cycles(singletons=singletons)
372 if cycles == []:
373 return "()"
/home/vbraun/Sage/sage/local/lib/python2.6/site-packages/sage/combinat/permutation.pyc
in to_cycles(self, singletons)
557 while next != cycleFirst:
558 cycle.append( next )
--> 559 l[next - 1], next = False, l[next - 1]
560 #Add the cycle to the list of cycles
561 if singletons or len(cycle) > 1:
IndexError: list index out of range
--
To post to this group, send an email to sage-devel@googlegroups.com
To unsubscribe from this group, send an email to
sage-devel+unsubscr...@googlegroups.com
For more options, visit this group at http://groups.google.com/group/sage-devel
URL: http://www.sagemath.org
