python: how to use the while statement

while statement:

count = 0
while True:
    print(count)
    count += 1
    if count == 10:
        break

Example:

Calculate n! , if: n = 5; then: n! = 5 * 4 * 3 * 2 * 1

# n! 
n = int(input( " Input n: " ))
number = n
while True:
    if number == 1:
        break
    number = number * (n-1)
    n -= 1
    if n <= 2:
        break
print(number)