Python-类

class CocaCola:
    formula = ['caffeine','sugar','water','soda'] #类的属性
coke_for_me = CocaCola() #类的实例化
coke_for_you = CocaCola() #类的实例化
print(CocaCola.formula) #类属性引用
print(coke_for_me.formula) #类的属性会被所有类的实例共享
print(coke_for_you.formula) #类的属性会被所有类的实例共享
coke_for_China = CocaCola()
coke_for_China.local_logo = '可口可乐' #创建实例属性
print(coke_for_China.local_logo) #打印实例属性引用结果

class CocaCola:
    formula = ['caffeine','sugar','water','soda']
    def drink(self,how_much): #类的方法也能有属于自己的参数 
        if how_much == 'a sip':
            print('Cool~')
        elif how_much == 'whole bottle':
            print('Headache!')
ice_coke = CocaCola()
ice_coke.drink('a sip')

class CocaCola():
    formula = ['caffeine','sugar','water','soda']
    def __init__(self,logo_name): #在定义类的时候新增实例属性
        self.local_logo = logo_name
    def drink(self): # HERE！
        print('Energy!')
coke = CocaCola('可口可乐')
print(coke.local_logo)


类的继承

class CocaCola():
    formula = ['caffeine','sugar','water','soda']

class CaffeineFree(CocaCola): #类的继承