On Oct 23, 6:58 am, [EMAIL PROTECTED] wrote: > On 22 oct, 23:39, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote: > > > Nope, still doesn't work: > > > def fact(x): > > return reduce(operator.mul,xrange(1,x+1),1) > > > fact() should raise an exception if x is negative. > > So, where is the problem?
The fact that it returns 1 for negative x? And didn't you see my followup message? About how the example, as posted, doesn't even produce correct answers for legal values of x? > if not allowing negative numbers is so > important for you, Mathematical consistency is only important to _me_? > add a if statement and raise a ValueError exception. Not necessary when done correctly. Didn't you see my example? -- http://mail.python.org/mailman/listinfo/python-list
