python学习-4-类的使用

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=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

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python学习-4-类的使用

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