请问如何控制模块中定义的class或者function对其它的模块不可见呢？
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Python的对象模型很简单，基于命名约定，没有真正的访问限定，如果一定需要，考虑用C/C++扩展。

在06-2-13，ajax chelsea <ajaxchelsea at gmail.com> 写道：
>
> 请问如何控制模块中定义的class或者function对其它的模块不可见呢？
> _______________________________________________
> python-chinese
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python中没有对public private及protect专门定义,但是有相应的处理办法
   
  在类中以又下划线的变量被看作是私有的例:__tt
   
  全局变量,局部变量,类变量,实例变量都有相应的定义方法,查看一下相关资料会明白的具体的我也讲不太清楚以免误导了你
   
   
  

ajax chelsea <ajaxchelsea at gmail.com> 写道：
  请问如何控制模块中定义的class或者function对其它的模块不可见呢？ _______________________________________________
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在前面加__就可以。

On 2/13/06, 刘鑫 <march.liu at gmail.com> wrote:
> Python的对象模型很简单，基于命名约定，没有真正的访问限定，如果一定需要，考虑用C/C++扩展。
>
> 在06-2-13，ajax chelsea <ajaxchelsea at gmail.com> 写道：
> > 请问如何控制模块中定义的class或者function对其它的模块不可见呢？
> > _______________________________________________
> > python-chinese
> > Post: send python-chinese at lists.python.cn
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> >
> >
>
>
>
> --
> 欢迎访问：
> http://blog.csdn.net/ccat
>
> 刘鑫
> March.Liu
>
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不管用啊

----chess.py

def __faint():
    print 'faint'


----caller.py

import chess

chess.__faint()

还是正常运行啊


在06-2-13，flya flya <flyaflya at gmail.com> 写道：
>
> 在前面加__就可以。
>
> On 2/13/06, 刘鑫 <march.liu at gmail.com> wrote:
> > Python的对象模型很简单，基于命名约定，没有真正的访问限定，如果一定需要，考虑用C/C++扩展。
> >
> > 在06-2-13，ajax chelsea <ajaxchelsea at gmail.com> 写道：
> > > 请问如何控制模块中定义的class或者function对其它的模块不可见呢？
> > > _______________________________________________
> > > python-chinese
> > > Post: send python-chinese at lists.python.cn
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> > >
> >
> >
> >
> > --
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> >
> > 刘鑫
> > March.Liu
> >
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On 2/13/06, ajax chelsea <ajaxchelsea at gmail.com> wrote:
> 不管用啊
>
> ----chess.py
>
> def __faint():
>     print 'faint'
>
>
> ----caller.py
>
> import chess
>
> chess.__faint()
>
> 还是正常运行啊
>

模块不行。__是用在类中的。


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那是不是就可以将不打算公开给其它模块的function弄个class包进去，函数名加个__前缀？

-----some.py-----

def pub_function():
    pass

class impl:
    def __private_function(self):
        pass


在06-2-13，limodou <limodou at gmail.com> 写道：
>
> On 2/13/06, ajax chelsea <ajaxchelsea at gmail.com> wrote:
> > 不管用啊
> >
> > ----chess.py
> >
> > def __faint():
> >     print 'faint'
> >
> >
> > ----caller.py
> >
> > import chess
> >
> > chess.__faint()
> >
> > 还是正常运行啊
> >
>
> 模块不行。__是用在类中的。
>
>
> --
> I like python!
> My Blog: http://www.donews.net/limodou
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> _______________________________________________
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On 2/13/06, ajax chelsea <ajaxchelsea at gmail.com> wrote:
> 那是不是就可以将不打算公开给其它模块的function弄个class包进去，函数名加个__前缀？
>

在python中还没有真正不能访问的。就是改成__也有办法。而且写成class的方法，那么有可能还要设成类方法，这样才不用创建实例。

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怎么才能设置为类方法呢？

在06-2-13，limodou <limodou at gmail.com> 写道：
>
> On 2/13/06, ajax chelsea <ajaxchelsea at gmail.com> wrote:
> > 那是不是就可以将不打算公开给其它模块的function弄个class包进去，函数名加个__前缀？
> >
>
> 在python中还没有真正不能访问的。就是改成__也有办法。而且写成class的方法，那么有可能还要设成类方法，这样才不用创建实例。
>
> --
> I like python!
> My Blog: http://www.donews.net/limodou
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> _______________________________________________
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On 2/13/06, ajax chelsea <ajaxchelsea at gmail.com> wrote:
> 怎么才能设置为类方法呢？
>

有两种： staticmethod 和 classmethod

参见python文档中的built-in function部分

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那它能表达protected的语义嘛？？
==============================



limodou <limodou at gmail.com> 
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2006-02-14 00:28
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On 2/13/06, ajax chelsea <ajaxchelsea at gmail.com> wrote:
> 怎么才能设置为类方法呢？
>

有两种： staticmethod 和 classmethod

参见python文档中的built-in function部分

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On 2/14/06, andy.bu at kodak.com <andy.bu at kodak.com> wrote:
>
> 那它能表达protected的语义嘛？？
>  ==============================
>

不能。在python中目前来说从官方版本支持的好象就只有在class中可以设置私有成员。对于模块无法设置。staticmethod和classmethod它们只是象c++中的静态成员方法，可以不用实例化即可以调用。没有protected这个控制。

Python因为相对简单，因此不需要很复杂的访问权限控制。在zope3中可能有一些，具体的不了解。不过不是官方版本所缺省实现的。

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OK , i see .
thank you.

==============================



limodou <limodou at gmail.com> 
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2006-02-14 13:06
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On 2/14/06, andy.bu at kodak.com <andy.bu at kodak.com> wrote:
>
> 那它能表达protected的语义嘛？？
>  ==============================
>

不能。在python中目前来说从官方版本支持的好象就只有在class中可以设置私有成
员。对于模块无法设置。staticmethod和classmethod它们只是象c++中的静态成员方
法，可以不用实例化即可以调用。没有protected这个控制。

Python因为相对简单，因此不需要很复杂的访问权限控制。在zope3中可能有一些，
具体的不了解。不过不是官方版本所缺省实现的。

--
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My Blog: http://www.donews.net/limodou
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可不可以将"私有"的函数弄到单独的模块中,然后在Package的__all__中不包括这个模块?

在06-2-14，limodou <limodou at gmail.com> 写道：
>
> On 2/14/06, andy.bu at kodak.com <andy.bu at kodak.com> wrote:
> >
> > 那它能表达protected的语义嘛？？
> >  ==============================
> >
>
>
> 不能。在python中目前来说从官方版本支持的好象就只有在class中可以设置私有成员。对于模块无法设置。staticmethod和classmethod它们只是象c++中的静态成员方法，可以不用实例化即可以调用。没有protected这个控制。
>
> Python因为相对简单，因此不需要很复杂的访问权限控制。在zope3中可能有一些，具体的不了解。不过不是官方版本所缺省实现的。
>
> --
> I like python!
> My Blog: http://www.donews.net/limodou
> NewEdit Maillist: http://groups.google.com/group/NewEdit
>
> _______________________________________________
> python-chinese
> Post: send python-chinese at lists.python.cn
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有费这个力气，是我就自己写扩展了，呵呵。
很多Python程序员也同时会一些编译语言的。

在06-2-14，ajax chelsea <ajaxchelsea at gmail.com> 写道：
>
> 可不可以将"私有"的函数弄到单独的模块中,然后在Package的__all__中不包括这个模块?
>
> 在06-2-14，limodou <limodou at gmail.com> 写道：
> >
> > On 2/14/06, andy.bu at kodak.com < andy.bu at kodak.com> wrote:
> > >
> > > 那它能表达protected的语义嘛？？
> > >  ==============================
> > >
> >
> > 不能。在python中目前来说从官方版本支持的好象就只有在class中可以设置私有成员。对于模块无法设置。staticmethod和classmethod它们只是象c++中的静态成员方法，可以不用实例化即可以调用。没有protected这个控制。
> >
> >
> > Python因为相对简单，因此不需要很复杂的访问权限控制。在zope3中可能有一些，具体的不了解。不过不是官方版本所缺省实现的。
> >
> > --
> > I like python!
> > My Blog: http://www.donews.net/limodou
> > NewEdit Maillist: http://groups.google.com/group/NewEdit
> >
> > _______________________________________________
> > python-chinese
> > Post: send python-chinese at lists.python.cn
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> > Unsubscribe: send unsubscribe to  python-chinese-request at lists.python.cn
> >
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> >
> >
>
> _______________________________________________
> python-chinese
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On 2/14/06, ajax chelsea <ajaxchelsea at gmail.com> wrote:
> 可不可以将"私有"的函数弄到单独的模块中,然后在Package的__all__中不包括这个模块?
>

这种方法应该是只对使用 from xxx import * 这种方式有效。对于from xxx import __yyy 应该无效吧。


--
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为啥非得要不能访问呢，来个下划线意思一下就行了



在06-2-14，limodou <limodou at gmail.com> 写道：
>
> On 2/14/06, ajax chelsea <ajaxchelsea at gmail.com> wrote:
> > 可不可以将"私有"的函数弄到单独的模块中,然后在Package的__all__中不包括这个模块?
> >
>
> 这种方法应该是只对使用 from xxx import * 这种方式有效。对于from xxx import __yyy 应该无效吧。
>
>
> --
> I like python!
> My Blog: http://www.donews.net/limodou
> NewEdit Maillist: http://groups.google.com/group/NewEdit
>
> _______________________________________________
> python-chinese
> Post: send python-chinese at lists.python.cn
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>
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+1 :)
python is NOT c++/java
  ----- Original Message ----- 
  From: helium
  To: python-chinese at lists.python.cn
  Sent: Tuesday, February 14, 2006 5:58 PM
  Subject: Re: [python-chinese] Python 中有没有public,protected,private?


  为啥非得要不能访问呢，来个下划线意思一下就行了



  在06-2-14，limodou <limodou at gmail.com> 写道：
    On 2/14/06, ajax chelsea <ajaxchelsea at gmail.com> wrote:
    > 可不可以将"私有"的函数弄到单独的模块中,然后在Package的__all__中不包括这个模块?
    >

    这种方法应该是只对使用 from xxx import * 这种方式有效。对于from xxx 
import __yyy 应该无效吧。


    --
    I like python!
    My Blog: http://www.donews.net/limodou
    NewEdit Maillist: http://groups.google.com/group/NewEdit

    _______________________________________________
    python-chinese
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------------------------------------------------------------------------------


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ok, 感谢所有人的解答，总结了一下：
http://blog.csdn.net/wuliaoshengji/archive/2006/02/14/599079.aspx



在06-2-14，Slowness Chen <chenzh at bhh.com.cn> 写道：
>
>  +1 :)
> python is NOT c++/java
>
> ----- Original Message -----
> *From:* helium <helium.sun at gmail.com>
> *To:* python-chinese at lists.python.cn
> *Sent:* Tuesday, February 14, 2006 5:58 PM
> *Subject:* Re: [python-chinese] Python 中有没有public,protected,private?
>
>
>  为啥非得要不能访问呢，来个下划线意思一下就行了
>
>
>
> 在06-2-14，limodou <limodou at gmail.com> 写道：
> >
> > On 2/14/06, ajax chelsea <ajaxchelsea at gmail.com> wrote:
> > > 可不可以将"私有"的函数弄到单独的模块中,然后在Package的__all__中不包括这个模块?
> > >
> >
> > 这种方法应该是只对使用 from xxx import * 这种方式有效。对于from xxx import __yyy 应该无效吧。
> >
> >
> > --
> > I like python!
> > My Blog: http://www.donews.net/limodou
> > NewEdit Maillist: http://groups.google.com/group/NewEdit
> >
> > _______________________________________________
> > python-chinese
> > Post: send python-chinese at lists.python.cn
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> > Unsubscribe: send unsubscribe to  python-chinese-request at lists.python.cn
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> >
> >
>  ------------------------------
>
> _______________________________________________
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On 2/14/06, ajax chelsea <ajaxchelsea at gmail.com> wrote:
> ok,
> 感谢所有人的解答，总结了一下：http://blog.csdn.net/wuliaoshengji/archive/2006/02/14/599079.aspx
>

不错。

--
I like python!
My Blog: http://www.donews.net/limodou
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哈哈,limodou先生也还没睡啊?
ajax同学真不错啊,我要向你学习.


On 2/15/06, limodou <limodou at gmail.com> wrote:
>
> On 2/14/06, ajax chelsea <ajaxchelsea at gmail.com> wrote:
> > ok,
> >
> 感谢所有人的解答，总结了一下：http://blog.csdn.net/wuliaoshengji/archive/2006/02/14/599079.aspx
> >
>
> 不错。
>
> --
> I like python!
> My Blog: http://www.donews.net/limodou
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>
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