Recursion

[ichabod801]

The problem is that you are subtracting num from num on line 17, so your look only runs once, not num times. Although if you want a loop to run a certain number of times you should use a for loop:

def show_ast(n):
    if n > 0:
        show_ast(n - 1)
    text = ''
    for ast in range(n):
        text += '*'
    print(text)

But with the multiplication of the string that you figured out, you don't need any loop:

def show_ast()
    if n > 0:
        show_ast(n - 1)
    print('*' * n)