root@10.1.6.200:~# cat object.py 

#!/usr/bin/env python
#coding:utf8
 
class Dave():
  var1 = "class atribute,public atrribute var1" #类属性,公有属性var1
  __var2 = "class self atribute __var2"  #类的私有属性__var2
 
  def fun(self):
    self.var2 = "object public atrribute var2" #对象的公有属性var2
    self.__var3 = "object self atrribute __var3" #对象的私有属性__var3
    var4 = "Function of the local variable var4" #函数fun的局部变量
   
  def other(self):
    print self.__var3

he = Dave()    #实例化一个对象he
print he.var1   #从实例中获取类的公有属性
print Dave.var1  #直接从类中获取公有属性

root@10.1.6.200:~# ./object.py 

class atribute,public atrribute var1
class atribute,public atrribute var1

he = Dave()
print Dave.__var2
print he.__var2

root@10.1.6.200:~# ./object.py 

Traceback (most recent call last):
 File "./object.py", line 19, in <module>
  print Dave.__var2
AttributeError: class Dave has no attribute '__var2'

class Dave():
  var1 = "class atribute,public atrribute var1" #类属性,公有属性var1
  __var2 = "class self atribute __var2"  #类的私有属性__var2
   
  def other(self):
    print Dave.__var2   
 
he = Dave()
he.other()

root@10.1.6.200:~# ./object.py 

class self atribute __var2

he = Dave()
liu = Dave()
he.fun()
print he.var2
print liu.var2

root@10.1.6.200:~# ./object.py 

object public atrribute var2
Traceback (most recent call last): <span></span>       #对象liu由于没有调用fun方法所有就没有该属性.
File "./object.py", line 20, in <module>
  print liu.var2
AttributeError: Dave instance has no attribute 'var2'

he = Dave()
he.fun()
print he.__var3

root@10.1.6.200:~# ./object.py 

Traceback (most recent call last):
 File "./object.py", line 18, in <module>
  print he.__var3
AttributeError: Dave instance has no attribute '__var3'

he = Dave()
he.fun()
print he.var4

root@10.1.6.200:~# ./object.py 

Traceback (most recent call last):
 File "./object.py", line 18, in <module>
  print he.var4
AttributeError: Dave instance has no attribute 'var4'

  def fun(self):
    self.var2 = "object public atrribute var2" #对象的公有属性var2
    self.__var3 = "object self atrribute __var3" #对象的私有属性__var3
    var4 = "Function of the local variable var4" #函数fun的局部变量
    print var4       #可以在函数内部直接打印,只在该函数内有用
    print self.__var3
 
he = Dave()
he.fun()

root@10.1.6.200:~# ./object.py 

Function of the local variable var4
object self atrribute __var3

  def fun(self):
    self.var2 = "object public atrribute var2" #对象的公有属性var2
    self.__var3 = "object self atrribute __var3" #对象的私有属性__var3
    var4 = "Function of the local variable var4" #函数fun的局部变量
    print var4       #一个函数的局部变量在另外一个函数是访问不到的
    print self.__var3
   
  def other(self):
    print var4
    print self.__var3
 
he = Dave()
he.fun()
print "#"*100
he.other()

root@10.1.6.200:~# ./object.py 

Function of the local variable var4
object self atrribute __var3
####################################################################################################
Traceback (most recent call last):   #会认为var4是全局变量打印.定义全局变量可在class 头加入 var4 = "global"
 File "./object.py", line 22, in <module>
  he.other()
 File "./object.py", line 16, in other
  print var4
NameError: global name 'var4' is not defined

#!/usr/bin/env python
#coding:utf8
var4 = "global"            #定义var4为全局变量
class Dave():
  var1 = "class atribute,public atrribute var1" #类属性,公有属性var1
  __var2 = "class self atribute __var2"  #类的私有属性__var2
 
  def fun(self):
    self.var2 = "object public atrribute var2" #对象的公有属性var2
    self.__var3 = "object self atrribute __var3" #对象的私有属性__var3
    var4 = "Function of the local variable var4" #函数fun的局部变量
    print var4
    print self.__var3
   
  def other(self):
    print var4
    print self.__var3       #可调用私有属性,前提是先调用fun
 
he = Dave()
he.fun()
print "#"*100
he.other()

root@10.1.6.200:~# ./object.py 

Function of the local variable var4
object self atrribute __var3
####################################################################################################
global
object self atrribute __var3

#!/usr/bin/env python
#coding:utf8
class Dave():
  name = "python"
 
  def fun1(self):        #定义公有方法
    print self.name
    print "i am public method"
 
  def __fun2(self):       #定义私有方法
    print self.name
    print "i am self method"

root@10.1.6.200:~# ./method.py    #直接调用对象公有方法没有问题

python
i am public method

#!/usr/bin/env python
#coding:utf8
class Dave():
  name = "python"
 
  def fun1(self):        #定义公有方法
    print self.name
    print "i am public method"
    self.__fun2()
 
  def __fun2(self):       #定义私有方法
    print self.name
    print "i am self method"
 
he = Dave()
he.fun1()

root@10.1.6.200:~# ./method.py 

python
i am public method
python
i am self method

  @classmethod
  def classFun(self):      #定义类方法
    print self.name
    print "i am class method"
 
Dave.classFun()

root@10.1.6.200:~# ./method.py 

python
i am class method

  def classFun(self):      #定义类方法
    print self.name
    print "i am class method"
 
  classnewFun = classmethod(classFun)
 
 
Dave.classnewFun()       #被转换后的是一个类方法,原来classfun还是一个普通方法

root@10.1.6.200:~# ./method.py 

python
i am class method

  @staticmethod
  def staticFun():       #d定义静态方法
    print Dave.name #注意不加self，直接打name也不行,会认为调用全局变量,需要使用类型加属性.
    print "i am static method"
 
Dave.staticFun()

oot@10.1.6.200:~# ./method.py 

python
i am static method

  def staticfun():       #定义静态方法
    print Dave.name
    print "i am static method"
 
  staticnewFun = staticmethod(staticFun)
 
Dave.staticnewFun()

root@10.1.6.200:~# ./method.py 

python
i am static method