Euler 20

gistfile1.txt

# set initial variable to hold the number we want to factorial

initial = 100
print initial,"! is equal to"

# do the factorial 

i = initial 
while (i > 0):
	initial = initial * i
	i = i - 1	

# convert factorial to string, cut and add up the digits, print answer

sum=0
initial = str(initial)
while (i < len(initial)):
	x = initial[i:i+1]
	x = int(x)
	sum = sum + x
	i = i +1 
	
print sum