python用lambda 和map求平均分

我想在最后加一条代码，求他们的平均分，要用到lambda和map，或者在原来代码里加入lambda和map用法，请问怎么做呢？

class Student(object):
    def __init__(self, stu_name, stu_age, stu_gender, stu_score):
        self.stu_name = stu_name
        self.stu_age = stu_age
        self.stu_gender = stu_gender
        self.stu_score = stu_score

    def show(self):
        print(self.stu_name, self.stu_age, self.stu_gender, self.stu_score)


if __name__ == '__main__':
    print('请输入五位学生的信息：（姓名#年龄#性别#成绩）')
    lst = []
    for i in range(0, 5):
        s = input(f'请输入第{i + 1}位学员的信息和成绩')
        s_lst = s.strip('#')
        print(s_lst)
        # 创建学生对象
    stu = Student(s_lst[0], int(s_lst[1]), s_lst[2], float(s_lst[3]))
    lst.append(stu)
    # 遍历简历
    for item in lst:
        item.show()

# 求平均分

lambda和map求平均分：

sum(map(lambda x:x.stu_score, stu))/len(stu)

另外你的17行，代码要用split()函数，不是用strip()

class Student(object):
    def __init__(self, stu_name, stu_age, stu_gender, stu_score):
        self.stu_name = stu_name
        self.stu_age = stu_age
        self.stu_gender = stu_gender
        self.stu_score = stu_score
 
    def show(self):
        print(self.stu_name, self.stu_age, self.stu_gender, self.stu_score)
 
 
if __name__ == '__main__':
    print('请输入五位学生的信息：（姓名#年龄#性别#成绩）')
    lst = []
    for i in range(0, 5):
        s = input(f'请输入第{i + 1}位学员的信息和成绩')
        s_lst = s.split('#')
        print(s_lst)
        # 创建学生对象
        stu = Student(s_lst[0], int(s_lst[1]), s_lst[2], float(s_lst[3]))
        lst.append(stu)

    # 遍历简历
    for item in lst:
        item.show()
 
    # 求平均分
    average = sum(map(lambda x:x.stu_score, lst))/len(lst)
    print('平均分：',average)
 

一定要lambda和map吗？不是已经一条语句就可以算出来了吗？

average=sum(i.stu_score for i in lst)/len(lst)