# kk.py 
class A(): 
  def __init__(self,name,age): 
    self.name=name 
    self.age=age 
class B(): 
  def __init__(self,name,id): 
    self.name=name 
    self.id=id 
def func(): 
  print 'func() is called!' 
def func1(): 
  print 'func1() is called!' 

#test_kk.py 
from kk import * #由于kk.py中沒(méi)有定義__all__屬性，所以導(dǎo)入了kk.py中所有的公有屬性、方法、類 
a=A('python','24') 
print a.name,a.age 
b=B('python',123456) 
print b.name,b.id 
func() 
func1() 

#kk.py 
__all__=('A','func') #在別的模塊中，導(dǎo)入該模塊時(shí)，只能導(dǎo)入__all__中的變量，方法和類 
class A(): 
  def __init__(self,name,age): 
    self.name=name 
    self.age=age 
class B(): 
  def __init__(self,name,id): 
    self.name=name 
    self.id=id 
def func(): 
  print 'func() is called!' 
def func1(): 
  print 'func1() is called!' 

#test_kk.py 
from kk import * #kk.py中定義了__all__屬性，只能導(dǎo)入__all__中定義的屬性，方法和類 
a=A('python','24') 
print a.name,a.age 
func() 
#func1() #NameError: name 'func1' is not defined 
#b=B('python',123456) #NameError: name 'B' is not defined 

#kk.py 
def func(): #模塊中的public方法 
  print 'func() is called!' 
def _func(): #模塊中的protected方法 
  print '_func() is called!' 
def __func():#模塊中的private方法 
  print '__func() is called!' 

#test_kk.py 
from kk import * #這種方式只能導(dǎo)入公有的屬性，方法或類【無(wú)法導(dǎo)入以單下劃線開(kāi)頭（protected）或以雙下劃線開(kāi)頭(private)的屬性，方法或類】  
func() 
#_func() #NameError: name '_func' is not defined 
#__func() #NameError: name '__func' is not defined 

__all__=('func','__func','_A') #放入__all__中所有屬性均可導(dǎo)入，即使是以下劃線開(kāi)頭 
class _A(): 
  def __init__(self,name): 
    self.name=name 
def func():  
  print 'func() is called!'  
def func1():  
  print 'func1() is called!'  
def _func():  
  print '_func() is called!'  
def __func():  
  print '__func() is called!'  

from kk import *   
func()  
#func1() #func1不在__all__中，無(wú)法導(dǎo)入 NameError: name 'func1' is not defined 
#_func() #_func不在__all__中，無(wú)法導(dǎo)入 NameError: name '_func' is not defined 
__func() #__func在__all__中，可以導(dǎo)入 
a=_A('python') #_A在__all__中，可以導(dǎo)入 
print a.name 

#kk.py 
def func(): 
  print 'func() is called!' 
def _func(): 
  print '_func() is called!' 
def __func(): 
  print '__func() is called!' 

#test_kk.py 
from kk import func,_func,__func #可以通過(guò)這種方式導(dǎo)入public,protected,private 
func() 
_func() #NameError: name '_func' is not defined 
__func() #NameError: name '__func' is not defined 

#kk.py 
def func(): 
  print 'func() is called!' 
def _func(): 
  print '_func() is called!' 
def __func(): 
  print '__func() is called!' 

#test_kk.py 
import kk #也可以通過(guò)這種方式導(dǎo)入public,protected,private 
kk.func() 
kk._func() #NameError: name '_func' is not defined 
kk.__func() #NameError: name '__func' is not defined 

#kk.py 
import sys 
__all__ = ["func"] # 排除了 'sys' 
def func(): 
  print 'func() is called!' 

#test_kk.py 
from kk import * 
#print sys.path #NameError: name 'sys' is not defined 
func() 

__all__ = [
  "foo",
  "bar",
  "egg",
]