#!/usr/bin/env python #(1)起始行
"this is a module" #(2)模块文档
import sys #(3)模块导入
debug = True #(4)全局变量定义
class Fooclass(object): #(5)类定义
"Foo class"
pass
def test(): #(6)函数定义
"test function"
foo = Fooclass()
if debug:
print 'run test()'
if __name__ == '__main__': #(7)主程序
test()
