20170419类的运用

类是有一些系列有共同特征或行为事物的抽象概念的综合

使用class来定义一个类（如果使用def定义函数）

class CocaCola():
    it_taste = 'so good!'
coke_for_bum = CocaCola()#等号左边为实例（类似变量），右边是类的名称，这种行为称为类的实例化，
coke_for_president = CocaCola()
print(coke_for_bum.it_taste)
print(coke_for_president.it_taste)

class CocaCola():
    formula = ['caffeine','sugar','water','soda']#等号左边为类的属性
coke_for_me = CocaCola()
coke_for_you = CocaCola()

print(CocaCola.formula)
print(coke_for_me.formula)
print(coke_for_you.formula)

for element in coke_for_you.formula:
    print(element)

coke_for_China = CocaCola()
coke_for_China.local_logo = '可口可乐'#通过object.new_atrr进行赋值，得到一个新的实例属性（变量）
print(coke_for_China.local_logo)

实例属性和类属性的区别：