zoukankan      html  css  js  c++  java
  • 8、面向对象class

    对象的概念同其他语言的对象相同
    一个基本的类
    1. #!/usr/bin/python
      class person:
              def hi(self,name):
                      print 'Hello,%s'%name
      p1= person()
      p1.hi('lk')
    [root@likun python_scripts]# python 12class.py 
    Hello,lk
     
    类的初始化:
    当变量需要在类的多个函数中使用,要在class中假如初始化函数,函数的参数要在创建对象的时候加入
    def __init__(self,name,salary):        -- 定义
        self.name1=name
    p1= person('lk',20000)                 -- 调用
    这时可以用 print p1.name1 ,self就是类本身,也就是创建的p1,因此可以p1直接调用所属变量
    1. [root@likun python_scripts]# cat 12class.py 
      #!/usr/bin/python
      class person:
              def __init__(self,name,salary):
                      self.name=name
                      self.salary=salary
              def hi(self):
                      print 'Hello,%s'% self.name
              def hi2(self):
                      print 'Yes,%s have %s every month!'%(self.name,self.salary)
      p1= person('lk',20000)
      p1.hi()
      p1.hi2()
    [root@likun python_scripts]# python 12class.py 
    Hello,lk
    Yes,lk have 20000 every month!
     
    小练习: 
    建立一个狗的类(有名字和性别),它可以叫、吃饭、见到异性摇尾巴
    1. [root@likun python_scripts]# cat 13dogclass.py 
      #!/usr/bin/python
      class dog:
              def __init__(self,name1,sex1):
                      self.name=name1
                      self.sex=sex1
              def bark(self,default='low'):
                      ifdefault=='low':
                              print 'low..............'
                      else:   print 'hige.............'
              def eat(self,default='like'):
                      ifdefault=='like':
                              print 'good food,i like it!'
                      else:   print 'im full~ ~ ~ ~ ~ ~ ~'
              def tail(self,default):
                      if self.sex !=default:
                              print 'oh! shark~ ~ i like you~ ~'
                      else:   print 'hello ,you are my friend!'
      d1=dog('www','male')        # 创建一个公狗
      d2=dog('mmm','female')      # 创建一个母狗
      d1.bark()                    #狗叫
      d1.eat()                     #吃饭
      d1.tail('male')              #d1见到一个公狗
      d1.tail(d2.sex)              #d1见到d2
    1. [root@likun python_scripts]# python 13dogclass.py 
      low..............
      good food,i like it!
      hello ,you are my friend!
      oh! shark~ ~ i like you~ ~
    真实使用中,不会在class程序文件中建立对象,在使用调用类时再创建对象:
    1. >>>import dogclass
      >>> d1=dogclass.dog('www','male')
      >>> d2=dogclass.dog('mmm','female')
      >>> d1.bark()
      low..............
      >>> d1.eat()  
      good food,i like it!
      >>> d1.tail('male')
      hello ,you are my friend!
      >>> d1.tail(d2.sex) 
      oh! shark~~~~
      >>> d1.name 'www'
     
    类的继承:
    1. classPerson:                              #父类
          def __init__(self,Type,Sex,Age,Name):
              self.race =Type
              self.sex =Sex
              self.age =Age
              self.name =Name
          def talk(self,msg=0):
              self.msg = msg
              if self.msg !=0:
                  print self.name,'Saying:',self.msg
      class person_info(Person):                 #子类,括号里代表继承了谁
          def __init__(self,Type,Sex,Age,Name,nation,work,salary):
              Person.__init__(self,Type,Sex,Age,Name)        #调用父类的初始化方法
              self.country = nation
              self.job = work
              self.salary = salary
          def tell(self,msg):                               
              return ''' %s's personal information:
                  Name  :%s
                  Age   :%s
                  Nation:%s
                  Work  :%s
              ''' % (self.name,self.name,self.age,self.country,self.job)
    b1=person_info('yellow','male','18','lk','china','it','20000')
    b2=person_info('yellow','male','18','tom','china','it','20000')
    g1=person_info('yellow','famale','18','jack','china','it','20000')
     print '%s is looking for boyfriend: %s '%(g1.name,b1.tell('aaa'))
    得到结果:
    jack is looking for boyfriend:  lk's personal information: 
                            Name  : lk 
                            Age   : 18
                            Nation: china
                            Work  : it
     
  • 相关阅读:
    4、自定义菜单
    3、关注、取消关注 与 关键字回复
    2、自动回复消息
    1、接入公众平台
    java学习备忘录
    vue组件最佳实践
    js拉起或下载app
    angular1.5 Components
    Charlse 使用小记
    2016年终总结
  • 原文地址:https://www.cnblogs.com/kissdb/p/4009593.html
Copyright © 2011-2022 走看看