Python类和实例调用

class Student(object):
    #定义一个Student类，
    def __init__(self, name, score,age):
        self.name = name
        self.score = score
        self.age = age
    def print_score(self):
        #定义类方法,实例对象可调用
        return self.name,self.score
    def get_grade(self):
        if self.score >= 90:
            return ‘A‘
        elif self.score >= 60:
            return ‘B‘
        else:
            return ‘C‘
    
st1 = Student(‘lingyummu‘,67,25)
    #创建一个Student类对象st1
print(st1.name,st1.age,st1.score)
print(st1.print_score())
print(st1.get_grade())