Thanks for the help, I didn't even think of that.
I'm guessing there's no easy way to handle exponents or logarithmic functions? I will be running into these two types as well.
Well, consider:
import math
eval("log(pow(x,2)*pow(y,3),2)",{'pow':math.pow,'log':math.log},{'x':1,'y':2})[No, you wouldn't want to write it that way; it's merely illustrating what you can do without doing much.]
HTH, --ag
[BTW -- cultural question: Do we top-post here?]
"Artie Gold" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED]
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
-- Artie Gold -- Austin, Texas http://it-matters.blogspot.com (new post 12/5) http://www.cafepress.com/goldsays -- http://mail.python.org/mailman/listinfo/python-list
