python 用turtle库画几个有特点的图形

以下是几个有特点的图形，使用Python的Turtle库来绘制：

五角星

import turtle

t = turtle.Turtle()

for i in range(5):
    t.forward(100)
    t.right(144)

turtle.done()

螺旋线

import turtle

t = turtle.Turtle()

for i in range(100):
    t.forward(i)
    t.right(90)

turtle.done()

大雪花

import turtle

t = turtle.Turtle()

def snowflake(length):
    if length < 5:
        t.forward(length)
        return
    else:
        snowflake(length/3)
        t.left(60)
        snowflake(length/3)
        t.right(120)
        snowflake(length/3)
        t.left(60)
        snowflake(length/3)

for i in range(3):
    snowflake(100)
    t.right(120)

turtle.done()

彩虹

import turtle

t = turtle.Turtle()

colors = ['red', 'orange', 'yellow', 'green', 'blue', 'purple']

for i in range(6):
    t.color(colors[i])
    t.circle(100)
    t.right(60)

turtle.done()
``