Python library for working with simple equations

[Chris Rebert]

On Thu, Feb 18, 2010 at 1:09 AM, lallous <lallous at lgwm.org> wrote:
> Hello
>
> Is there is any Python library that allow such things:
>
> Given a string expression as: x + 5 + x * (y + 2), any library that
> can develop the equation for example.
> Or if we say factor with "x" then it renders the expression with x *
> ( rest of expression ).
> There could be a functionality where when x,y are given then the
> expression can be evaluated.
> If there are two expressions, they can be added and the symbols
> preserved.
>
> Does such a thing exist?

They're called computer algebra systems:
http://en.wikipedia.org/wiki/Computer_algebra_system

SymPy is one for Python:
http://code.google.com/p/sympy/

Don't know if it supports factoring specifically; I've never used it,
I just have Google-Fu.

Cheers,
Chris
--
http://blog.rebertia.com