• 2021-04-14
    执行如下代码:
    import turtle as t
    def DrawCctCircle(n):
    t.penup()
    t.goto(0,-n)
    t.pendown()
    t.circle(n)
    for i in range(20,80,20):
    DrawCctCircle(i)
    t.done()
    在 Python Turtle Graphics 中,绘制的图形是