What is python program for Factorial of numbers??

Question

I mean How one can make a factorial (From Maths) program in python i.e, factorial of 5 means 5! =5×4×3×2×1 or 7! =7×6×5×4×3×2×1

Answer 1

You can use a recursive function like this:

def factorial(n):
print("factorial has been called with n = " + str(n))
if n == 1:
return 1
else:
res = n * factorial(n-1)
print("intermediate result for ", n, " * factorial(" ,n-1, "): ",res)
return res

print(factorial(5))

I think the print statements explain it better than I could