避免在不混淆Python新编程学生的情况下使用global？

避免在不混淆Python新编程学生的情况下使用global？

我鼓励他们开始学习OO

class Location:     name="a place"     description = "A dark place.  there are exits to the North and East"     exits = "North","East"     def __str__(self):         return "%sn%s"%(self.name,self.description)class Player:     current_location = "Home"     inventory = ["Blue Key","Magic Thumbtacks"]     health = 100     name = "Unknown"     def __init__(self,name):         self.name = nameplayer = Player("Player 1")loc = Location()print locx = input("Input:")

老实说，游戏是一个困难的概念（甚至是文字冒险）。但是我将直接从面向对象的概念开始，从长远来看，它们将从中受益更多。

当然，这个例子很小，并且省略了很多实现细节。

一个不相关但更好的面向对象示例是：

class Animal:     voice = '...'     def speak(self):         return "A %s Says '%s'"%(self.__class__.__name__, self.voice)class Dog(Animal):     voice = "Bark, Bark"class Duck(Animal):     voice = "Quack, Quack"print Dog().speak()print Duck().speak()