在前几篇中，都是枯燥无味，还要动动脑筋的算法题，现在可以放松下，来完成画一只 粉红 Pig。 随着函数出现的拼图，来猜猜这只会是什么样的 Pig?
大部分python安装环境下都包含turtle这个绘图模块
- 切换RGB色彩模式
- 画笔控制函数
- 运动控制函数
- 方向控制函数
① 画鼻子
- turtle.penup()
画笔抬起，不留下痕迹
- turtle.pendown()
画笔落下，留下痕迹
- turtle.setheading(angle)
改变行进方向
angle：改变方向的角度（绝对坐标下，绝对角度）
- turtle.goto(100,100)
指从当前的点指向括号内所给坐标
代码语言：javascript复制def nose(x,y):
turtle.penup()
turtle.goto(x,y)
turtle.pendown()
turtle.setheading(-30)
turtle.begin_fill()
a = 0.4
for i in range(120):
if 0<=i<30 or 60<=i<90:
a = a 0.08
turtle.left(3)
turtle.forward(a)
else:
a = a - 0.08
turtle.left(3)
turtle.forward(a)
turtle.end_fill()
turtle.penup()
turtle.setheading(90)
turtle.forward(25)
turtle.setheading(0)
turtle.forward(10)
turtle.pendown()
turtle.pencolor("deeppink")
turtle.setheading(10)
turtle.begin_fill()
turtle.circle(5)
turtle.color("pink")
turtle.end_fill()
turtle.penup()
turtle.setheading(0)
turtle.forward(20)
turtle.pendown()
turtle.pencolor("deeppink")
turtle.setheading(10)
turtle.begin_fill()
turtle.circle(5)
turtle.color("pink")
turtle.end_fill()
② 画头部
- turtle.circle(r,angle)
指沿着海龟左侧的某一点做圆运动
根据半径r，绘制一个extent角度的弧度
r：默认圆心在海龟左侧r距离的位置
- turtle.forword(d)
向前行进 d：行进距离，可以为负数
代码语言：javascript复制def head(x,y):
turtle.color("pink")
turtle.penup()
turtle.goto(x,y)
turtle.setheading(180)
turtle.circle(300,-30)
turtle.circle(100,-60)
turtle.circle(80,-100)
turtle.circle(150,-20)
turtle.circle(60,-95)
turtle.setheading(161)
turtle.circle(-300,15)
turtle.penup()
turtle.goto(-100,100)
turtle.pendown()
turtle.setheading(-30)
a = 0.4
for i in range(60):
if 0<=i<30 or 60<=i<90:
a = a 0.08
turtle.left(3)
turtle.forward(a)
else:
a = a - 0.08
turtle.left(3)
turtle.forward(a)
turtle.end_fill()③ 画耳朵
代码语言：javascript复制def ears(x,y):
turtle.color("pink")
turtle.penup()
turtle.goto(x,y)
turtle.pendown()
turtle.begin_fill()
turtle.setheading(100)
turtle.circle(-50,50)
turtle.circle(-10,120)
turtle.circle(-50,54)
turtle.end_fill()
turtle.penup()
turtle.setheading(90)
turtle.forward(-12)
turtle.setheading(0)
turtle.forward(30)
turtle.pendown()
turtle.begin_fill()
turtle.setheading(100)
turtle.circle(-50,50)
turtle.circle(-10,120)
turtle.circle(-50,56)
turtle.end_fill()
④ 画眼睛
代码语言：javascript复制def eyes(x,y):
turtle.color("white")
turtle.penup()
turtle.setheading(90)
turtle.forward(-20)
turtle.setheading(0)
turtle.forward(-95)
turtle.pendown()
turtle.begin_fill()
turtle.circle(15)
turtle.end_fill()
turtle.color("black")
turtle.penup()
turtle.setheading(90)
turtle.forward(12)
turtle.setheading(0)
turtle.forward(-3)
turtle.pendown()
turtle.begin_fill()
turtle.circle(3)
turtle.end_fill()
turtle.color("white")
turtle.penup()
turtle.setheading(90)
turtle.forward(-25)
turtle.setheading(0)
turtle.forward(40)
turtle.pendown()
turtle.begin_fill()
turtle.circle(15)
turtle.end_fill()
turtle.color("black")
turtle.penup()
turtle.setheading(90)
turtle.forward(12)
turtle.setheading(0)
turtle.forward(-3)
turtle.pendown()
turtle.begin_fill()
turtle.circle(3)
turtle.end_fill()
⑤ 画脸颊
代码语言：javascript复制def cheek(x,y):
turtle.color("pink")
turtle.penup()
turtle.goto(x,y)
turtle.pendown()
turtle.setheading(0)
turtle.begin_fill()
turtle.circle(30)
turtle.end_fill()
⑥ 画嘴巴
代码语言：javascript复制def mouth(x,y):
turtle.color("pink")
turtle.penup()
turtle.goto(x,y)
turtle.pendown()
turtle.setheading(-80)
turtle.circle(30,40)
turtle.circle(40,80)
⑦ 全局设置
- turtle.colormode(mode)
1.0:RGB小数模式
255:RGB整数模式
- turtle.pensize(width)
画笔宽度
- turtle.setup(width,height,startx,starty)
-setup() 设置窗体的位置和大小 相对于桌面的起始点的坐标以及窗口的宽度高度，若不写窗口的起始点，则默认在桌面的正中心，窗体的坐标原点默认在窗口的中心。
代码语言：javascript复制def setting():
turtle.pensize(4)
turtle.hideturtle()
turtle.colormode(255)
turtle.color("pink")
turtle.setup(840,500)
turtle.speed(10)⑧ 主函数
代码语言：javascript复制def main():
setting()
nose(-100,100)
head(-69,167)
ears(0,160)
eyes(0,140)
cheek(80,10)
mouth(-20,30)
turtle.done()来欣赏下，辛苦那么久，敲了那么多码，结果会是什么呢？
