class Animal:    def __init__(self, name):    # Constructor of the class        self.name = name    def talk(self):              # Abstract method, defined by convention only        raise NotImplementedError("Subclass must implement abstract method") class Cat(Animal):    def talk(self):        return ‘Meow!‘ class Dog(Animal):    def talk(self):        return ‘Woof! Woof!‘ animals = [Cat(‘Missy‘),           Dog(‘Lassie‘)] for animal in animals:    print animal.name + ‘: ‘ + animal.talk()

#!_*_coding:utf-8_*_#__author__:"Alex Li"   class SchoolMember(object):    members = 0 #初始学校人数为0    def __init__(self,name,age):        self.name = name        self.age = age     def  tell(self):        pass     def enroll(self):        ‘‘‘注册‘‘‘        SchoolMember.members +=1        print("\033[32;1mnew member [%s] is enrolled,now there are [%s] members.\033[0m " %(self.name,SchoolMember.members))         def __del__(self):        ‘‘‘析构方法‘‘‘        print("\033[31;1mmember [%s] is dead!\033[0m" %self.name)class Teacher(SchoolMember):    def __init__(self,name,age,course,salary):        super(Teacher,self).__init__(name,age)        self.course = course        self.salary = salary        self.enroll()      def teaching(self):        ‘‘‘讲课方法‘‘‘        print("Teacher [%s] is teaching [%s] for class [%s]" %(self.name,self.course,‘s12‘))     def tell(self):        ‘‘‘自我介绍方法‘‘‘        msg = ‘‘‘Hi, my name is [%s], works for [%s] as a [%s] teacher !‘‘‘ %(self.name,‘Oldboy‘, self.course)        print(msg) class Student(SchoolMember):    def __init__(self, name,age,grade,sid):        super(Student,self).__init__(name,age)        self.grade = grade        self.sid = sid        self.enroll()      def tell(self):        ‘‘‘自我介绍方法‘‘‘        msg = ‘‘‘Hi, my name is [%s], I‘m studying [%s] in [%s]!‘‘‘ %(self.name, self.grade,‘Oldboy‘)        print(msg) if __name__ == ‘__main__‘:    t1 = Teacher("Alex",22,‘Python‘,20000)    t2 = Teacher("TengLan",29,‘Linux‘,3000)     s1 = Student("Qinghua", 24,"Python S12",1483)    s2 = Student("SanJiang", 26,"Python S12",1484)     t1.teaching()    t2.teaching()    t1.tell()

class Role(object):    def __init__(self,name,role,weapon,life_value=http://www.mamicode.com/100,money=15000):        self.name = name        self.role = role        self.weapon = weapon        self.life_value = life_value        self.money = money     def shot(self):        print("shooting...")     def got_shot(self):        print("ah...,I got shot...")     def buy_gun(self,gun_name):        print("just bought %s" %gun_name) r1 = Role(‘Alex‘,‘police‘,‘AK47’) #生成一个角色r2 = Role(‘Jack‘,‘terrorist‘,‘B22’)  #生成一个角色