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实例一：

import turtleturtle.speed("fastest")turtle.pensize(1)color=["red","yellow","blue","green"]for y in  range(250):    turtle.pencolor(color[y%4])    turtle.forward(3*y)    turtle.right(29)    turtle.left(175)

效果图：

import turtlet = turtle.Pen()t.speed( 0 )turtle.bgcolor( "black" )colors = [ "red","orange","yellow","green","blue","purple","pink" ]sides = int( turtle.numinput( "边数","请输入图形边数，1 到 8 之间：",4,1,8 ) )your_name = turtle.textinput( "名字","请输入你的名字：" )for x in range( 0,200):    t.pencolor( colors[x%sides] )    t.penup()    t.forward( x*3/sides + x )    t.pendown()    t.write( your_name,font=( "宋体",int( (x+4)/4 ),"bold" ) )    t.left( 360/sides + 1 )    t.width( x*sides / 200 )

效果图：

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