Yang Hui triangle is also look like Pascal triangle

Read in an integer n and output the first n lines of Yang Hui triangle

def fact(n):
    azam=1
    for c in range(1,n+1):
        azam = azam*c
    
    return azam
rows = int(input("Enter how many row you want to see :\n "))
for i in range(0, rows):
    for j in range(1, rows-i):
        print("  ", end="")
    for k in range(0, i+1):
        azam = int(fact(i)/(fact(k)*fact(i-k)))
        print("  ", azam, end="")
    
    print()