intro python/data programming

Expected output is:

10! = 3628800

9! = 362880

... (same for 8 thru 3)

2! = 2

1! = 1

current output is:

1! = 1

my code:

any idea where/what the problem is and how to fix it?

num_lines = 10 for j in range(num_lines, , -1): factorial = 1 for i in range(1, j+1): factorial = factorial * 1 print(j. "! : ", factorial)