import pickle

class Student:
    def __init__(self, name, lastname , address , tell , score, ave):
        self.name = name
        self.lastname = lastname
        self.address = address
        self.tell = tell
        self.score = score
        self.ave = ave

    def avrage(self):
        sum = 0
        for i in range(0, 5):
            sum += self.score[i]
        ave = sum / 5
        return ave

    def Read_info(self):
        self.name = input("Enter student name: ")
        self.lastname = input("Enter student lastname: ")
        self.address = input("Enter student address: ")
        self.tell = input("Enter student tell: ")
        for i in range(0, 5):
            self.score.append(float(input("Enter student score " + str(i+1) + ": ")))
        self.ave = self.avrage()
        return self

    def show_info(self):
        print(self.name, "," , self.lastname, "," ,self.address, "," ,self.tell)
        print(self.score)
        print(self.ave)

def write_file(list1, n):
    file = open('D:\\STUD', 'wb')
    for i in range(n):
        pickle.dump(list1[i], file)
    file.close()


def read_file(n):
    student = []
    file = open('D:\\STUD', 'rb')
    for i in range(n):
        student.append(pickle.load(file))
    file.close()
    return student

def Sort_std(list_std, n):
    for i in range(n):
        for j in range(n):
            if list_std[i].lastname < list_std[j].lastname:
                temp = list_std[i]
                list_std[i] = list_std[j]
                list_std[j] = temp
    return list_std

student_list = []

for i in range(0, 3):
    std = Student("","" ,"" ,"0914..." , [], 0.0)
    std.Read_info()
    student_list.append(std)


student_list=Sort_std(student_list,3)
write_file(student_list, 3)
student_list = read_file(3)

for i in range(0, 3):
     student_list[i].show_info()