DanielJohnson:
> Please help, I couldnt find the function through help.
You can't find it because it's not there:
def factorial(n):
"""factorial(n): return the factorial of the integer n.
factorial(0) = 1
factorial(n) with n<0 is -factorial(abs(n))
"""
result = 1
for i in xrange(1, abs(n)+1):
result *= i
if n >= 0:
return result
else:
return -result
def binomial(n, k):
"""binomial(n, k): return the binomial coefficient (n k)."""
assert n>0 and isinstance(n, (int, long)) and isinstance(k, (int,
long))
if k < 0 or k > n:
return 0
if k == 0 or k == n:
return 1
return factorial(n) // (factorial(k) * factorial(n-k))
Bye,
bearophile
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