Python library for working with simple equations
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? Thanks, Elias -- http://mail.python.org/mailman/listinfo/python-list
Re: Python library for working with simple equations
On Thu, Feb 18, 2010 at 1:09 AM, lallous lall...@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 -- http://mail.python.org/mailman/listinfo/python-list
Re: Python library for working with simple equations
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 -- Psss, psss, put it down! - http://www.cafepress.com/putitdown -- http://mail.python.org/mailman/listinfo/python-list
Re: Python library for working with simple equations
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. Probably you can isolate the part of sage that you actually need and can throw away 95% of it. HTH, Daniel -- Psss, psss, put it down! - http://www.cafepress.com/putitdown -- http://mail.python.org/mailman/listinfo/python-list
Re: Python library for working with simple equations
On Thu, Feb 18, 2010 at 4:09 AM, lallous lall...@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?
Thanks,
Elias
--
http://mail.python.org/mailman/listinfo/python-list
From sage:
x = var('x')
g = x**2 + x
g(x=5)
30
g.factor
... (x + 1)*x
Geremy Condra
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