题目：绘制下面的图形

python turtle 100-99
Python 海龟绘图 100 题——第 99 题

解析：

绘制曲线九角星。

答案：

方法一
Python
import turtle as t
def youyuanhu(r, n):
    for i in range(0,n):
        t.fd(0.0174*r)
        t.rt(1)
    return
def zuoyuanhu(r, n):
    for i in range(0,n):
        t.fd(0.0174*r)
        t.lt(1)
    return


def youquxian(r, n):
    for i in range(2):
        youyuanhu(r, n)
        zuoyuanhu(r, n)
    return


def zuoquxian(r, n):
    for i in range(2):
        zuoyuanhu(r, n)
        youyuanhu(r, n)
    return


t.rt(30)
for i in range(0, 9):
    youquxian(20, 100)
    t.rt(180-180/9)
方法二

Python
import turtle as t
def yuanhu(r, n):
    t.circle(-r, n)
    return

def youquxian(r, n):
    for i in range(2):
        yuanhu(r, n)
        yuanhu(-r, n)
    return

def zuoquxian(r, n):
    for i in range(2):
        yuanhu(-r, n)
        yuanhu(r, n)
    return

t.rt(30)
for i in range(0, 9):
    youquxian(20, 100)
    t.rt(180-180/9)