Python library for working with simple equations

[Daniel Fetchinson]

> 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.

Take a look at sage: http://www.sagemath.org/
I wouldn't say it's simple, in fact it's huge, but it'll do the job.

Cheers,
Daniel

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