'''
成員的可見性：公開和私有
'''

class MyCat():
    def __init__(self,name):
        self.name = name
    
    def marking(self,score):
        if score < 0:
            return '不能給貓打負分'
        # 私有變數
        self.__score = score
        print(self.name +'本次的考評為：'+str(self.__score))

    # 私有方法在方法前加__
    def __marking1(self,score):
        if score < 0:
            return '不能給貓打負分'
        self.score = score
        print(self.name +'本次的考評為：'+str(self.score))

cat = MyCat('MIMI')
cat.marking(100)
print(cat.marking(-1))