think python学习心得-（2）接口设计

TurtleWorld模块的下载与安装：

下载地址就是：http://thinkpython.com/swampy

安装方法把压缩包解压之后，用cmd cd到解压的安装目录下，运行：

python setup.py install

安装后就可以from swampy.TurtleWorld import *啦！

练习4.3

1-

      from swampy.TurtleWorld import *
      world = TurtleWorld()
      bob = Turtle()
      print bob
      def square(t):
      for i in range(4):
       fd(t,100)
       lt(t)
      square(bob)
      wait_for_user()
  
 

      from swampy.TurtleWorld import *
      world = TurtleWorld()
      bob = Turtle()
      print bob
      def square(t,length):
      for i in range(4):
       fd(t,length)
       lt(t)
      square(bob,50)
      wait_for_user()
  
 

      from swampy.TurtleWorld import *
      world = TurtleWorld()
      bob = Turtle()
      print bob
      def square(t,length,n):
      for i in range(n):
       fd(t,length)
       lt(t,360/n)
      square(bob,50,6)
      wait_for_user()
  
 

太简单了不写了

5-

直接用math包

画六边形：

      from swampy.TurtleWorld import *
      world = TurtleWorld()
      bob = Turtle()
      def square(t,length,n):
      for i in range(n):
       fd(t,length)
       lt(t,360/n)
      for i in range(6):
       square(bob,50,3)
       lt(bob,60)
      wait_for_user()
  
 

文章来源: zclhit.blog.csdn.net，作者：zclhit_，版权归原作者所有，如需转载，请联系作者。

原文链接：zclhit.blog.csdn.net/article/details/50926069