def print_pyramid(height: int):
"""in the following example for height = 4, we see that
* > 3 spaces + 1 stone (+ 3 spaces optional)
*** > 2 spaces + 3 stones + (2 spaces optional)
***** > 1 space + 5 stones + (1 space optional)
******* > 0 space + 7 stones
with current_height starting at 0
we add 2 'stones' for each new line, so 2 * current_height + 1
those stones have (height - current_height - 1) * spaces on the left
"""
for current_height in range(height):
stones = "*" * (2 * current_height + 1)
space = " " * (height - current_height - 1)
print(f"{space}{stones}{space}")
height = 4
print_pyramid(height)
