写一个班级的类， 存储班里人数，统计班级里各学科的总分的最高分、各学科的平均分； 写班级里的学生类，存储学生所有成绩， 计算某个学生的全部课程的平均分、全部课程的总分、全部课程的最高分

#班级类
class Class_NO(object):
    def __init__(self,name):
        self.grade_class_name=name
        self.students=[]
        
    def set_grade_class_name(self,name):
        self.grade_class_name=name
        
    def get_grade_class_name(self):
        return self.grade_class_name
        
    def add_student(self,student):
        self.students.append(student)
        
    def get__classNo_max_total_score(self):
        student_total_score=[]
        for i in self.students:
            student_total_score.append(i.get_student_total_score())   ##########
        #print (student_total_score)
        max_student_total_score=max(student_total_score)
        return max_student_total_score
         
    def get_classNo_chinese_avg_score(self):
        student_chinese_score=[]
        for i in self.students:
            student_chinese_score.append(i.get_chinese_score())
        return sum(student_chinese_score)/len(self.students)
    
    def get_classNo_math_avg_score(self):
        student_math_score=[]
        for i in self.students:
            student_math_score.append(i.get_math_score())
        return sum(student_math_score)/len(self.students)

#学生类
class Student(object):
    def __init__(self,name,grade_class_no):
        self.name=name
        self.grade_class_no=grade_class_no
        self.__chinese_score=None
        self.__math_score=None
        self.__total_score=None 
        
    def set_chinese_score(self,score):
        if score>=0 and score<=100 and isinstance(score,(int,float)):
            self.__chinese_score=score
        else:
            print ("你输入的分数不是数字类型，或者不在0-100分数的范围内")
            
    def get_chinese_score(self):
        return self.__chinese_score
        
    def set_math_score(self,score):
        if score>=0 and score<=100 and isinstance(score,(int,float)):
            self.__math_score=score
        else:
            print ("你输入的分数不是数字类型，或者不在0-100分数的范围内")
            
    def get_math_score(self):
        return self.__math_score
        
    def get_student_total_score(self):
        self.__total_score=self.__chinese_score+self.__math_score
        return self.__total_score
     
    def get_student_avg_score(self):
        return sum([self.__chinese_score,self.__math_score])/2
        
    def get_student_max_score(self):
        return max(self.__chinese_score,self.__math_score)
        
if __name__ == "__main__":
    s = Student("zita","三年二班")
    s.set_chinese_score(100)
    s.set_math_score(80)
    print ("%s的平均分是:%s"%(s.name,s.get_student_avg_score()),",","%s的总分是:%s"%(s.name,s.get_student_total_score()),",","%s的最高分是:%s"%(s.name,s.get_student_max_score()))
    t = Student("tim","三年二班")
    t.set_chinese_score(88)
    t.set_math_score(62)
    print ("%s的平均分是:%s"%(t.name,t.get_student_avg_score()),",","%s的总分是:%s"%(t.name,t.get_student_total_score()),",","%s的最高分是:%s"%(t.name,t.get_student_max_score()))
    c=Class_NO("三年二班")
    c.add_student(s)
    c.add_student(t)
    print ("%s总分最高分是:%s"%(c.get_grade_class_name(),c.get__classNo_max_total_score()))
    print ("%s语文学科平均分是:%s"%(c.get_grade_class_name(),c.get_classNo_chinese_avg_score()))
    print ("%s数学学科平均分是:%s"%(c.get_grade_class_name(),c.get_classNo_math_avg_score()))
    

 运行结果：

E:\workspace-python\test>py -3 c.py
zita的平均分是:90.0 , zita的总分是:180 , zita的最高分是:100
tim的平均分是:75.0 , tim的总分是:150 , tim的最高分是:88
三年二班总分最高分是:180
三年二班语文学科平均分是:94.0
三年二班数学学科平均分是:71.0