类与对象

类继承自object，一般称之为“属性”。

class Hero(object):

类函数第一参数必须为self，一般称之为“方法”。

def magicAttack(self, times = 1):

具体属性与方法，可以通过help(Hero)来查看。

示例

Python 2.7.10 (default, Jul 15 2017, 17:16:57) 
[GCC 4.2.1 Compatible Apple LLVM 9.0.0 (clang-900.0.31)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> 
>>> 
>>> class Hero(object):
...     health = 100
...     magic = 60
...     magicAttackStep = 10
...     def magicAttack(self, times = 1):
...             if (self.magic - times * self.magicAttackStep >= 0):
...                     self.magic -= times * self.magicAttackStep
...                     return True
...             return False
... 
>>> 
>>> ZhaoYun = Hero()
>>> ZhaoYun.health
100
>>> ZhaoYun.magic
60
>>> ZhaoYun.magicAttack()
True
>>> ZhaoYun.magic
50
>>> ZhaoYun.magicAttack(3)
True
>>> ZhaoYun.magic
20
>>> ZhaoYun.magicAttack(3)
False
>>> ZhaoYun.magic
20
>>>