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turtle库是一个很经典的绘图库，其最初来自于1967年创造的logo编程语言，之后被Python编写放到了Python的内置模块中。网络上有很多借助于turtle绘制精美图像的案例。比如小猪佩奇、皮卡丘、柯基犬等等。趁着新年假期还未结束，今天州的先生（https://zmister.com）为大家带来一个福鼠的绘制。
首先，咱们（https://zmister.com）把鼠的头给绘制了。鼠头主要是由圆来构成，脸庞是一个大圆，耳朵、眉毛、眼睛、嘴角和鼻子也都是由不同弧度的圆构成。鼠头的绘制代码如下所示：
def head():
turtle.color('black')
# 脸轮廓
turtle.pd() # 落笔
turtle.circle(50) # 画一个半径为50的圆
turtle.pu() # 提笔
# 右耳轮廓
turtle.goto(50,60) # 移动到x=50,y=60的位置
turtle.pd() # 落笔
turtle.circle(30,260) # 画一个半径为30，角度为245的圆弧
turtle.pu() # 提笔
# 右耳耳纹
turtle.goto(30,90)
turtle.pd()
turtle.seth(65)
turtle.circle(-30,70)
turtle.pu()
# 左耳轮廓
turtle.goto(-50,60)
turtle.pd()
turtle.seth(180) # 设置方向为西，
turtle.circle(-30,260)
turtle.pu()
# 左耳耳纹
turtle.goto(-30,90)
turtle.pd()
turtle.seth(120)
turtle.circle(30,70)
turtle.pu()
# 面部五官
# 右侧眉毛
turtle.goto(5,80)
turtle.seth(20)
turtle.pd()
turtle.circle(-25,40)
turtle.pu()
# 左侧眉毛
turtle.goto(-5,80)
turtle.seth(160)
turtle.pd()
turtle.circle(25,40)
turtle.pu()
# 右侧眼睛
turtle.begin_poly()
turtle.goto(8,60)
turtle.seth(45)
turtle.pd()
turtle.circle(-15,120)
turtle.pu()
turtle.goto(8,60)
turtle.seth(40)
turtle.pd()
turtle.circle(-15,100)
turtle.pu()
turtle.end_poly()
# 左侧眼睛
turtle.goto(-8,60)
turtle.seth(135)
turtle.pd()
turtle.circle(15,120)
turtle.pu()
turtle.goto(-8,60)
turtle.seth(140)
turtle.pd()
turtle.circle(15,100)
turtle.pu()
# 鼻子
# 鼻子上瓣
turtle.goto(-6,45)
turtle.seth(70)
turtle.pd()
turtle.circle(-6,150)
turtle.pu()
# 鼻子下瓣
turtle.goto(-6,45)
turtle.seth(-70)
turtle.pd()
turtle.circle(6,150)
turtle.pu()
# 鼻线
turtle.goto(0,40)
turtle.seth(270)
turtle.pd()
turtle.forward(7)
turtle.pu()
# 上嘴线
turtle.seth(200)
turtle.pd()
turtle.circle(-15,60)
turtle.pu()
turtle.goto(0,33)
turtle.seth(-20)
turtle.pd()
turtle.circle(15,60)
turtle.pu()
# 下嘴线
turtle.goto(10,33)
turtle.seth(260)
turtle.pd()
turtle.circle(-15,65)
turtle.pu()
turtle.goto(-10,33)
turtle.seth(280)
turtle.pd()
turtle.circle(15,65)
turtle.pu()
# 牙齿
turtle.goto(4,33)
turtle.seth(270)
turtle.pd()
turtle.forward(4)
turtle.seth(180)
turtle.forward(8)
turtle.seth(90)
turtle.forward(4)
turtle.pu()
# 胡须
turtle.pensize(2)
turtle.goto(30,30)
turtle.seth(8)
turtle.pd()
turtle.circle(-60,40)
turtle.pu()
turtle.goto(30,25)
turtle.seth(-5)
turtle.pd()
turtle.circle(-60,40)
turtle.pu()
turtle.goto(-30,30)
turtle.seth(172)
turtle.pd()
turtle.circle(60,40)
turtle.pu()
turtle.goto(-30,25)
turtle.seth(188)
turtle.pd()
turtle.circle(60,40)
turtle.pu()
# 睫毛
turtle.pensize(1)
turtle.goto(30,58)
turtle.seth(20)
turtle.pd()
turtle.circle(20,20)
turtle.pu()
turtle.pensize(1)
turtle.goto(28,62)
turtle.seth(25)
turtle.pd()
turtle.circle(20,12)
turtle.pu()
turtle.pensize(1)
turtle.goto(-30,58)
turtle.seth(160)
turtle.pd()
turtle.circle(-20,20)
turtle.pu()
turtle.pensize(1)
turtle.goto(-28,62)
turtle.seth(165)
turtle.pd()
turtle.circle(-20,12)
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