Factorials

[Gerhard Häring]

Rogue9 wrote:
> Pardon me but could anyone enlighten me if python2.2 has a math function
> to call to do factorials of integers?

It has not.

> If not then is there a code snippet
> for doing such a thing available?I tried to write some code for this
> myself but with little success.

Enter the words 'python' and 'factorial' into the search field 
http://google.com/ to find code that does this.

The recursive form is pretty much a direct form of the methematical 
definition of the factorial:

def fkt(n):
     if n == 0:
         return 1
     else:
         return n * fkt(n-1)

If you're doing a lot with factorials, I think you should upgrade to 
Python 2.3 already, because it has an optimized multiplication for longs.

-- Gerhard