有没有人帮我看看我写的错在哪了求解

Question

按着给的答案写的，不知道为什么还是错了，哪个朋友帮我看看，真的对python不太理解啊

Answer 1

class Student:
    School = "湖州师范学院"
    addr = "湖州市二环东路759号"

    def __init__(self, sname, sno, ssex, sage):
        self.sname = sname
        self.sno = sno
        self.ssex = ssex
        self.sage = sage

print(Student.School, Student.addr)

s = Student("张三", "2022082201", "男", 19)
s.specialty = "计算机科学与技术"

print(s.sname)