[Tutor] factorial

[Gerrit Holl]

> From: Mic Forster <micforster@yahoo.com>
> To: tutor@python.org
> Subject: [Tutor] factorial
> Date: 	Sun, 11 May 2003 10:10:41 +0200

> Hi Chaps,

Hi,

> Does Python support a factorial function?
> 
> eg.(below is math notation)
> n = 10
> y = 3
> x = n! / y! - 1
> x = ?

As I understand it, you can easily write it yourself:

 16 >>> def fact(n):
 16 ...  if n<2: return n
 16 ...  else: return n*fact(n-1)
 16 ...
 18 >>> fact(10)/fact(3) - 1
604799

Or is that not what you mean?

yours,
Gerrit.

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