孤独雪鹰 发表于 2018-8-8 10:37:06

Python 类的使用一

  一,self含义
# -*- coding: utf-8 -*-  
class person:
  def one(self,name,age):
  print "you name is %s and you age is %s." % (name, age)
  

  
p = person() #绑定实例
  
p.one("du",22)
  执行结果:
you name is du and you age is 22.  其实self可以不必写成self,但是必须要有一个参数如下图

  详细了解可以参考博客:http://www.cnblogs.com/jessonluo/p/4717140.html
  二,__init__初始化。
# -*- coding: utf-8 -*-  
class person:
  def __init__(self,sex):
  self.sex = sex
  def one(self,name,age):
  print "you name is %s and you age is %s and sex is %s" % (name, age, self.sex)
  

  
p = person("boy") #绑定实例
  
p.one("du",22)
  执行结果:
you name is du and you age is 22 and sex is boy  其实就相当于变量sex在类里。比函数大一级别。如下面的程序,和上面的执行结果是一样的。
# -*- coding: utf-8 -*-  
class person:
  sex = "boy"
  def __init__(self,sex):
  #self.sex = sex
  pass
  def one(self,name,age):
  print "you name is %s and you age is %s and sex is %s" % (name, age, self.sex)
  

  
p = person("boy") #绑定实例
  
p.one("du",22)
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