python 皮球回弹问题

源程序：

height = 80
s = height   # 球经过的全部路径长度

t = str(height) + "+"

for i in range(9):
    s = s + height
    t = t + str(height) + "+"
    height = height / 2
print(t.strip("+"), "=", s)
print("第10次:", height)

运行结果：