Python面向对象之类和对象属性的增删改查操作示例

# -*- coding:utf-8 -*-
#! python2
class Chinese:
  country = 'China'
  def __init__(self,name):
    self.name = name
  def play_ball(self,ball):
    print('%s play %s' %(self.name,ball))
#查看属性
print(Chinese.country)
#修改属性
Chinese.country = 'Japan'
print(Chinese.country)
p1 = Chinese('alex')
print(p1.__dict__)
print(p1.country)
#增加属性
Chinese.dang = ''
print(Chinese.dang)
print(p1.dang)
#删除属性
del Chinese.dang
del Chinese.country
print(Chinese.__dict__)

# -*- coding:utf-8 -*-
#! python2
class Chinese:
  country = 'China'
  def __init__(self,name):
    self.name = name
  def play_ball(self,ball):
    print('%s play %s' %(self.name,ball))
def test():
    print("对象方法的属性")
p1 = Chinese('alex')
print(p1.__dict__)
#查看属性
print(p1.name)
print(p1.play_ball)
#增加属性
p1.age = 18
print(p1.__dict__)
print(p1.age)
p1.test = test   #将外界的方法作为函数属性加入类中
print(p1.__dict__)
p1.test()
#修改属性
p1.age = 19
print(p1.__dict__)
print(p1.age)
#删除属性
del p1.age
print(p1.__dict__)