turtle海龟作图

个人心得：python这么火是有他的原因的，突然发现他的语言很有趣，库函数也很多。

这次是第一步，简单了解了一下turtle函数

 import turtle
 import time

 def drawSnake(rad, angle, len,neckrad ):
     for i in range(len):
         turtle.circle(rad,angle)
         turtle.circle(-rad,angle)
     turtle.circle(rad,angle/2)
     turtle.fd(rad)
     turtle.circle(neckrad+1, 180)
     turtle.fd(rad/2*3)
 def drakSnack_c(rad,len):
     turtle.seth(0)
     turtle.fd(rad)
     turtle.seth(120)
     turtle.fd(rad)
     turtle.seth(240)
     turtle.fd(rad)
     turtle.fd(50)
     turtle.circle(len*2)

 def main():
     turtle.setup(0.85,0.6,0,0)
     pythonsize = 1
     speed = 5
     turtle.speed(speed)
     turtle.pensize(pythonsize)
     #turtle.pencolor("red")
     #turtle.seth(-40)
     #drawSnake(40,80,5,pythonsize/2)
     getflower()

 def text():
     turtle.write("hello world!",font=("Arial",23,"bold"))
     time.sleep(2)

 def getflower():
     turtle.bgpic("timg.gif")
     turtle.color("red","yellow")
     turtle.begin_fill();
     for i in range(50):
         turtle.fd(200)
         turtle.left(170)
     turtle.end_fill()
     time.sleep(2)

 main()