其实OOP编程的主要作用也是使你的代码修改和扩展变的更容易，那么小白要问了，既然函数都能实现这个需求了，还要OOP干毛线用呢？ 呵呵，说这话就像，古时候，人们打仗杀人都用刀，后来出来了枪，它的主要功能跟刀一样，也是杀人，然后小白就问，既然刀能杀人了，那还要枪干毛线，哈哈，显而易见，因为枪能更好更快更容易的杀人。函数编程与OOP的主要区别就是OOP可以使程序更加容易扩展和易更改。

#!/usr/bin/env python
# Author:Xue Bao
#定义一个类
class Dog:
    #传名字
    def __init__(self,name):
        self.name = name

    def bulk(self):
        print("%s: wang wang wang!" % self.name)
#
d1 = Dog("张三")
d2 = Dog("李四")
d3 = Dog("王麻")
d1.bulk()
d2.bulk()
d3.bulk()

#!/usr/bin/env python
# Author:Xue Bao
#写了四个类
class School(object):
    def __init__(self,name,addr):
        self.name = name
        self.addr = addr
        self.students = []
        self.staffs = []

    def enroll(self,stu_obj):
        print("为学员%s 办理注册手册" %stu_obj.name)
        self.students.append(stu_obj)

    def hire(self,staff_obj):
        self.staffs.append(staff_obj)
        print("雇佣新员工%s 办理注册手册" %staff_obj.name)

#写的时候先搭建框架
class SchoolMember(object):
    #构造函数
    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):
        #打印自己信息
        print('''
        ------info of Teacher:%s- ---
        Name:%s
        Age:%s
        Sex:%s
        Salary:%s
        Course:%s
        ''' %(self.name,self.name,self.age,self.sex,self.salary,self.course)) #在老师这重构方法

    def teach(self):
        print("%s is teaching course [%s]" %(self.name,self.course))

class Student(SchoolMember):
    def __init__(self,name,age,sex,stu_id,grade):
        super(Student,self).__init__(name,age,sex)
        self.stu_id = stu_id
        self.grade = grade

    def tell(self):
        #打印自己信息
        print ( '''
        ------info of Teacher:%s- ---
        Name:%s
        Age:%s
        Sex:%s
        stu_id:%s
        grade:%s
        ''' %(self.name,self.name,self.age,self.sex,self.stu_id,self.grade)) #重构方法
    def pay_tuition(self,amount):
        print("%s has paid tution for $%s" %(self.name,amount))


#实例化学校
school = School("老男孩IT","海淀")
t1 = Teacher("oldboy",56,"MAN",20000,"linux")
t2 = Teacher("alex",22,"MF",2000,"python")

s1 = Student("test",36,"test",1001,"python")
s2 = Student("test2",26,"test2",1002,"linux")

t1.tell()
s1.tell()
school.hire(t1)
school.enroll(s1)
school.enroll(s2)

print(school.students)
print(school.staffs)

school.staffs[0].teach()

for stu in school.students:
    stu.pay_tuition(5000)

#!/usr/bin/env python
# Author:Xue Bao
#写了四个类
class School(object):
    def __init__(self,name,addr):
        self.name = name
        self.addr = addr
        self.students = []
        self.staffs = []

    def enroll(self,stu_obj):
        print("为学员%s 办理注册手册" %stu_obj.name)
        self.students.append(stu_obj)

    def hire(self,staff_obj):
        self.staffs.append(staff_obj)
        print("雇佣新员工%s 办理注册手册" %staff_obj.name)

#写的时候先搭建框架
class SchoolMember(object):
    #构造函数
    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):
        #打印自己信息
        print('''
        ------info of Teacher:%s- ---
        Name:%s
        Age:%s
        Sex:%s
        Salary:%s
        Course:%s
        ''' %(self.name,self.name,self.age,self.sex,self.salary,self.course)) #在老师这重构方法

    def teach(self):
        print("%s is teaching course [%s]" %(self.name,self.course))

class Student(SchoolMember):
    def __init__(self,name,age,sex,stu_id,grade):
        super(Student,self).__init__(name,age,sex)
        self.stu_id = stu_id
        self.grade = grade

    def tell(self):
        #打印自己信息
        print ( '''
        ------info of Teacher:%s- ---
        Name:%s
        Age:%s
        Sex:%s
        stu_id:%s
        grade:%s
        ''' %(self.name,self.name,self.age,self.sex,self.stu_id,self.grade)) #重构方法
    def pay_tuition(self,amount):
        print("%s has paid tution for $%s" %(self.name,amount))


#实例化学校
school = School("老男孩IT","海淀")
t1 = Teacher("oldboy",56,"MAN",20000,"linux")
t2 = Teacher("alex",22,"MF",2000,"python")

s1 = Student("test",36,"test",1001,"python")
s2 = Student("test2",26,"test2",1002,"linux")

t1.tell()
s1.tell()
school.hire(t1)
school.enroll(s1)
school.enroll(s2)

print(school.students)
print(school.staffs)

school.staffs[0].teach()

for stu in school.students:
    stu.pay_tuition(5000)