On Dec 29, 2008, at 5:23 PM, John Cremona wrote:
>
> Maybe I missed the point here but after
The point was a minor one...
> R.<x1,x2>=QQ[]
> M=matrix(R,1,2,[x1+x2,x1*x2])
>
> you can get at the entries like this:
> sage: M[0,0]
> x1 + x2
> sage: M[0,1]
> x1*x2
For the OP, it was surprising that "list(M)" did not return a list of
the entries of M. The reason is that (for Python, I think), M is a
list of "rows". The expression "M.list()" does return a list of the
entries of M, which is what one might naively expect of the former
expression.
In the world of objects, its not always clear what the object is, I
guess.
Justin
--
Justin C. Walker, Curmudgeon at Large
Institute for the Absorption of Federal Funds
--
Democracy is two wolves and a lamb
voting on what to have for lunch.
Liberty is a well-armed lamb contesting
the vote.
--~--~---------~--~----~------------~-------~--~----~
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
URLs: http://www.sagemath.org
-~----------~----~----~----~------~----~------~--~---
