fork download
copy 
  1. def fact(n):
  2.     '''
  3.     Calculate 1*2*...*n
  4.  
  5.     >>> fact(1)
  6.     1
  7.     >>> fact(10)
  8.     ?
  9.     >>> fact(-1)
  10.     ?
  11.     '''
  12.     if n < 1:
  13.         raise ValueError()
  14.     if n == 1:
  15.         return 1
  16.     return n * fact(n - 1)
  17.  
  18. if __name__ == '__main__':
  19.     import doctest
  20.     doctest.testmod()
  21.  
  22. # your code goes here
Success #stdin #stdout 0.63s 21064KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
https://ideone.com/15Bn9G
language:
Python 3 (python  3.12)
created:
5 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!