Python中类的定义

class Student(object):
    # 有点类似其它高级语言的构造函数
    def __init__(self,name,score):
        self.name = name
        self.score = score
def print_score(self):
        print("%s:%s"%(self.name,self.score))
def get_grade(self):
        if self.score >=90:
            return 'A'
        if self.score >=60:
            return 'B'
        return 'C'
bart = Student("frank",100)
print(bart.get_grade())