Dark Cowherd <[EMAIL PROTECTED]> wrote: > http://www.ucalc.com/mathparser/index.html > > There is a great library called UCALC which allows you to set up an > expression and evaluate it > for e.g. you an define an expression by calling a function in UCALC > then call it with various values of x > > for e.g. see this page > http://www.ucalc.com/mathparser/sample6.html > > It is very fast. I have used it in VB when there is lot of number > crunching to be done. > Is there a Python equivalent. > > I looked at numPy and SciPy sites (just skimmed through) did'nt seem > to have what I wanted. > > Any pointers?
Python has 'eval' and 'exec', so you can process at run-time anything that you can type into script file. However, it will be a bit more verbose than UCALC, because Python is more general. If you're looking for scientific calculator, which can be embedded or scripted, then perhaps you should take a look at http://home.eol.ca/~parkw/index.html#rpn It is RPN calculator with full support for <math.h> functions and some features found in typical programmable scientific calculators. Eg. 3+4/5-8 --> rpn 4 5 / 3 + 8 - = --> -4.2 x^2+5x-10 --> rpn 'f(x)= dup 5 + x 10 -' rpn 1 'f(x)' = --> -4 rpn 5 'f(x)' = --> 40 or it can be scripted directly using shell function, like --> func () { rpn $1 dup 5 + x 10 - = } func 1 func 5 Sum(x^2+5, 1, 10). I assume this is sum of x^2+5, for x=1,2,...,10 --> rpn clear for i in {1..10}; do rpn $i x^2 5 + + done rpn = --> 435 -- William Park <[EMAIL PROTECTED]>, Toronto, Canada ThinFlash: Linux thin-client on USB key (flash) drive http://home.eol.ca/~parkw/thinflash.html BashDiff: Super Bash shell http://freshmeat.net/projects/bashdiff/ -- http://mail.python.org/mailman/listinfo/python-list