On Oct 14, 1:37 am, Dan Drake <dr...@kaist.edu> wrote:
> On Tue, 13 Oct 2009 at 10:04PM -0700, Andrew.algebra wrote:
> > Hi there, I've only just started using sage and I'm still very much
> > the beginner.
>
> > I'd like to be able to evaluate a number of functions, and have their
> > output display as a tuple.
>
> > To be more specific, I have 24 functions, each of the same 4
> > variables. I can define a matrix with function entries, but I can't
> > seem to evaluate it as the Matrix object has no attribute "function".
>
> > Ideally, I'd like to enter
>
> > f(a,b,c,d)
>
> > and the answer to appear as
>
> > (g_1(a,b,c,d) g_2(a,b,c,d) ... g_24(a,b,c,d))
>
> How about something like (not tested):
>
> def f(*args):
> return tuple(func(*args) for func in [g1, g2, g3...g24])
>
> If your functions really are called "g1", "g13", and so on, you'll need
> to write in the full list above.
>
It's possible to get Python to do some similar things for you:
sage: for i in range(5):
....: var('x'+'%s'%i)
....:
x0
x1
x2
x3
x4
Question to help the original poster: Is it possible to do something
like this for that question? My naive try didn't work, of course,
since it mixed strings and other things. Can one turn the strings
back into Python/Sage identifiers before going on?
sage: for i in range(5):
....: g+"%s"%i(x,y) = 5*x*y^"%s"%i
------------------------------------------------------------
File "<ipython console>", line 2
SyntaxError: can't assign to operator (<ipython console>, line 2)
- kcrisman
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