创建学生类Student，继承自SchoolPerson类， 添加额外两个属性：班级class、学号sno。 添加方法：打印学生的所有信息print_info方法。

"""
创建学生类Student，继承自SchoolPerson类，
添加额外两个属性：班级class、学号sno。
添加方法：打印学生的所有信息print_info方法。
创建教师类Teacher，继承自SchoolPerson类，
添加额外两个属性：部门department、工号cno。
添加方法：打印教师的所有信息print_info方法。
定义学生类、教师类的对象，然后分别调用print_info方法
实现各自对象属性信息的输出。
"""

class SchoolPerson(object):
    def __init__(self, name, sex, age):
        self.name = name
        self.sex = sex
        self.age = age
        print(self.name + "执行了__init__()方法~~")

    def set_info(self, name, sex, age):
        self.name = name
        self.sex = sex
        self.age = age

    def get_info(self):
        return self.name + " " + self.sex + " " + self.age

    def __del__(self):
        print(self.name + "执行了__del__方法~~~")


class Student(SchoolPerson):
    def __init__(self, name, sex, age, class0, sno):
        super(Student, self).__init__(name, sex, age)
        self.class0 = class0
        self.sno = sno

    def print_info(self):
        print(self.name + " " + self.sex + " " + self.age + " " + self.class0 + " " + self.sno)


class Teacher(SchoolPerson):
    def __init__(self, name, sex, age, department, cno):
        super(Teacher, self).__init__(name, sex, age)
        self.department = department
        self.cno = cno

    def print_info(self):
        print(self.name + " " + self.sex + " " + self.age + " " + self.department + " " + self.cno)


s1 = Student("赵三", "男", "19", "1班", "123456789")
s1.print_info()

t1 = Teacher("李四", "男", "29", "教学部", "123456987")
t1.print_info()