python之面向对象之继承

#写一个类SchoolMember
class SchoolMember(object):
member_num = 0
def __init__(self,name,age,sex):
self.name = name
self.age = age
self.sex = sex
self.reg()
# self.member_num += 1
def reg(self):
SchoolMember.member_num += 1
print("SchoolMember[%s] is come to school,SchoolMember [%s] is already registered" %(self.member_num,self.name))
def tell(self):
print("hello,my name is [%s],and my age is [%s]" %(self.name,self.age))

#写一个SchollMember的子类teacher
class Teacher(SchoolMember):
def __init__(self,name,age,sex,course,salary):
super(Teacher,self).__init__(name,age,sex)
self.course = course
self.salary = salary
def teaching(self):
print("Teacher [%s] is teaching [%s]" %(self.name,self.course))

class Student(SchoolMember):
def __init__(self,name,age,sex,course,xufei):
super(Student,self).__init__(name,age,sex)
self.course = course
self.xufei = xufei
def pay_money(self):
print("student [%s] must pay [%s] to school" %(self.name,self.xufei))

#首先分别创建2个teacher的实例和2个student的实例

print("首先分别创建2个teacher的实例和2个student的实例")
t1 = Teacher("teacher1","12","M","python","123")
t2 = Teacher("teacher2","13","M","shell","234")
s1 = Student("Student1","1","W","python","1234")
s2 = Student("Student2","2","M","shell","12345")

# 首先分别创建2个teacher的实例和2个student的实例
# SchoolMember[1] is come to school,SchoolMember [teacher1] is already registered
# SchoolMember[2] is come to school,SchoolMember [teacher2] is already registered
# SchoolMember[3] is come to school,SchoolMember [Student1] is already registered
# SchoolMember[4] is come to school,SchoolMember [Student2] is already registered

print("teacher调用父类SchoolMember的方法tell")
t1.tell()
t2.tell()

# teacher调用父类SchoolMember的方法tell
# hello,my name is [teacher1],and my age is [12]
# hello,my name is [teacher2],and my age is [13]

print("teacher实例调用teacher类的方法")
t1.teaching()
t2.teaching()

# teacher实例调用teacher类的方法
# Teacher [teacher1] is teaching [python]
# Teacher [teacher2] is teaching [shell]

print("student调用父类SchoolMember的方法tell")
s1.tell()
s2.tell()

# student调用父类SchoolMember的方法tell
# hello,my name is [Student1],and my age is [1]
# hello,my name is [Student2],and my age is [2]

print("student实例调用student类的方法")
s1.pay_money()
s2.pay_money()

# student实例调用student类的方法
# student [Student1] must pay [1234] to school
# student [Student2] must pay [12345] to school