Diamond with recursion

def diamond(start, fini, half):
    if start < fini:
        if start <= half:
            print(f"{'  ' * (half - start)}{'* ' * ((start << 1) + 1)}")
        else:
            print(f"{'  ' * (start - half)}{'* ' * ((fini - start << 1) - 1)}")
        diamond(start + 1, fini, half)

try:
    height = int(input('Enter height (>4 and odd): '))
    if not height > 4 or not height & 1:
        raise ValueError
except ValueError:
    print('That is not going to work')
    height = None

if height:
    diamond(0, height, height >> 1)