On Sunday 02 November 2008, Tim Lahey wrote:
> On Nov 2, 2008, at 1:57 PM, Robert Dodier wrote:
> > Apparently Maple also does not require variables to be declared
> > (to judge by their quick start guide). Neither does Maxima/Macsyma
> > nor MuPAD nor PARI/GP ftr.
>
> For most work, Maple doesn't require you to define symbolic variables.
> One does need to define local variables for a procedure, though. But
> that isn't the same thing.
>
> The having to define variables kind of put me off using Sage to start.
> It wasn't particularly clear in the documentation.
>
> My main problems now stem from missing symbolic manipulation commands
> some of which are being addressed by pynac. So, I'm kind of holding
> off until Sage 3.2 before really diving back in.
>
> > Well, that would be an improvement. The need to declare variables
> > is different from various other packages, not just Mathematica. Some
> > explanation should go in the documentation for var itself as well.
>
> Something should be stated in the NameError message as well.

I'm not quite sure this is easily doable. Does iPython support some sort of 
exception catching/processing?

Cheers,
Martin


-- 
name: Martin Albrecht
_pgp: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x8EF0DC99
_www: http://www.informatik.uni-bremen.de/~malb
_jab: [EMAIL PROTECTED]


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