描述一个学校，讲师，学员的3个类（对应kc86）
class School(
object): # 以后写类都是用新式类，虽然py3里面都是按照广度优先。说不定以后就必须要加Object，基类，所有类的类。以后如果要在面向对象里面加点东西，就需要在基类里面加就行了
def __init__(self, name, addr):
self.name = name
self.addr = addr
self.students = []
self.teachers = []
def enroll(self, stu_obj): # stu_obj学生实例
print("为学员%s 办理注册手续" % stu_obj.name)
self.students.append(stu_obj)
class SchoolMember(object):
def __init__(self, name, age, sex):
self.name = name
self.age = age
self.sex = sex
def tell(self):
pass
class Teacher(SchoolMember):
def __init__(self, name, age, sex, salary, course):
super(Teacher, self).__init__(name, age, sex)
self.salary = salary
self.course = course
def tell(self):
print("""
---- info of Teacher : {} ----
