Turning String into Numerical Equation

Artie Gold artiegold at austin.rr.com
Sun Mar 13 04:48:50 CET 2005


Brian Kazian wrote:
> Here's my problem, and hopefully someone can help me figure out if there is 
> a good way to do this.
> 
> I am writing a program that allows the user to enter an equation in a text 
> field using pre-existing variables.  They then enter numerical values for 
> these variables, or can tell the program to randomize the values used within 
> a certain bounds.  My problem is taking in this equation they have written 
> in the text field and converting it into an equation Python can calculate.
> 
> The only way I know of to do this is by parsing it, which could get pretty 
> nasty with all of the different mathematical rules.  Does anyone have a 
> better idea than parsing to compute an equation from a string 
> representation?
> 
> Thanks so much!
> 
> Brian Kazian 
> 
> 
eval()

See: http://docs.python.org/lib/built-in-funcs.html#l2h-23

HTH,
--ag

-- 
Artie Gold -- Austin, Texas
http://it-matters.blogspot.com (new post 12/5)
http://www.cafepress.com/goldsays



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