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标题：Re: [python-chinese] Pytho
2004年08月10日 星期二 11:48
Jacob Fan jacob at exoweb.net
Tue Aug 10 11:48:17 HKT 2004
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Tue Aug 10 11:48:17 HKT 2004
实现树和链表不需要指针,只要引用就可以了.所谓Python,Java一类的语言中没有指针是指你不能得到一个数据的确切的地址,不能做指针运算等等. 不是说你不能引用另外一个对象.
class LinkedListNode:
def __init__(self, nextNode):
self.nextNode = nextNode
----- Original Message -----
From: "limodou" <chatme at 263.net>
To: <python-chinese at lists.python.cn>
Sent: Tuesday, August 10, 2004 11:38 AM
Subject: Re: [python-chinese] Python没有指针，怎么实现树和链表的结构？
> guochen,您好！
>
> 使用对象啊。对象可以是任意的东西啊。
>
> a = [1,2,[3,4,[5,6]]]
>
> 这样不就和链表一样吗？树也可以这样表示啊。
>
> ======= 2004-08-10 11:15:39 您在来信中写道：=======
>
> >python-chinese，您好！
> >
> >
> >
> > 致
> >礼！
> >
> >
> > guochen
> > guochen at 1218.com.cn
> > 2004-08-10
> >
> >
> >_______________________________________________
> >python-chinese list
> >python-chinese at lists.python.cn
> >http://python.cn/mailman/listinfo/python-chinese
>
> = = = = = = = = = = = = = = = = = = = =
>
>
> 致
> 礼！
>
>
> limodou
> chatme at 263.net
> 2004-08-10
>
>
--------------------------------------------------------------------------------
> _______________________________________________
> python-chinese list
> python-chinese at lists.python.cn
> http://python.cn/mailman/listinfo/python-chinese
>
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2004年08月10日 星期二 11:53
info at xichen.com info at xichen.com
Tue Aug 10 11:53:21 HKT 2004
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Tue Aug 10 11:53:21 HKT 2004
杨元杰,您好！
不会。你可以在google.com里面搜索一下线程的定义。
======= 2004-08-09 16:00:54 您在来信中写道：=======
>大家好!
>这是《programming python》10。4中的一个例子。这例子运行在服务器端，响应客户端的请求
>Example 10-7. PP2E\Internet\Sockets\thread-server.py
>#########################################################
># Server side: open a socket on a port, listen for
># a message from a client, and send an echo reply;
># echos lines until eof when client closes socket;
># spawns a thread to handle each client connection;
># threads share global memory space with main thread;
># this is more portable than fork--not yet on Windows;
>#########################################################
>
>import thread, time
>from socket import * # get socket constructor and constants
>myHost = '' # server machine, '' means local host
>myPort = 50007 # listen on a non-reserved port number
>
>sockobj = socket(AF_INET, SOCK_STREAM) # make a TCP socket object
>sockobj.bind((myHost, myPort)) # bind it to server port number
>sockobj.listen(5) # allow up to 5 pending connects
>
>def now():
> return time.ctime(time.time()) # current time on the server
>
>def handleClient(connection): # in spawned thread: reply
> time.sleep(5) # simulate a blocking activity
> while 1: # read, write a client socket
> data = connection.recv(1024)
> if not data: break
> connection.send('Echo=>%s at %s' % (data, now()))
> connection.close()
>
>def dispatcher(): # listen until process killd
> while 1: # wait for next connection,
> connection, address = sockobj.accept() # pass to thread for service
> print 'Server connected by', address,
> print 'at', now()
> thread.start_new(handleClient, (connection,))
>
>dispatcher()
>
>我不明白的是：
> 在函数dispatcher（）中，当服务器接到一个请求，启动了一个线程A，在线程A运行过程中，服务器又街道另个client的请求，执行connection, address = sockobj.accept()，那么线程A中的connecion不是就会被覆盖了吗？
>
>
>
>
>
>-------------------------------------------------------------------------------------
>15寸液晶双子星,震天雷II--D451￥2466/D353￥2399 http://design.163.com/aocmonitor/index.html
>_______________________________________________
>python-chinese list
>python-chinese at lists.python.cn
>http://python.cn/mailman/listinfo/python-chinese
>
= = = = = = = = = = = = = = = = = = = =
致
礼！
info
info at xichen.com
2004-08-10
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2004年08月10日 星期二 11:55
info at xichen.com info at xichen.com
Tue Aug 10 11:55:53 HKT 2004
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Tue Aug 10 11:55:53 HKT 2004
RGVhZG1hbizE+rrDo6ENCg0KCbTz0ae9zLLEwO/D5tPQsb6hts34wue7+bG+1K3A7aG3o6zA78Pm 09C9ssr2oaMNCiAgICDB7c3izfjJz9PQtPPBv7XE18rBz6GjvajS6cTjz8jFqsfls/50Y3C6zXVk cLXEx/ix8KGjDQoNCj09PT09PT0gMjAwNC0wOC0wOSAxOTo0NzoyOSDE+tTawLTQxdbQ0LS1wKO6 PT09PT09PQ0KDQo+1+69/LP2rEbSu9CpVURQIEJUIFRyYWNrZXIsztLV/c/r3mu3qNans9bL+6Os tavO0oymVURQsrvK7M+kDQo+DQo+LS0gDQo+VGhlIERlYWRtYW4gV2Fsa2luZy4uLi4uLg0KPl9f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fDQo+cHl0aG9uLWNo aW5lc2UgbGlzdA0KPnB5dGhvbi1jaGluZXNlQGxpc3RzLnB5dGhvbi5jbg0KPmh0dHA6Ly9weXRo b24uY24vbWFpbG1hbi9saXN0aW5mby9weXRob24tY2hpbmVzZQ0KPg0KDQo9ID0gPSA9ID0gPSA9 ID0gPSA9ID0gPSA9ID0gPSA9ID0gPSA9ID0NCgkJCQ0KDQqhoaGhoaGhoaGhoaGhoaGh1sINCsDx o6ENCiANCgkJCQkgDQqhoaGhoaGhoaGhoaGhoaGhaW5mbw0KoaGhoaGhoaGhoaGhoaGhoWluZm9A eGljaGVuLmNvbQ0KoaGhoaGhoaGhoaGhoaGhoaGhoaEyMDA0LTA4LTEwDQoNCg==
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2004年08月10日 星期二 11:56
hoxide hoxide_dirac at yahoo.com.cn
Tue Aug 10 11:56:09 HKT 2004
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Tue Aug 10 11:56:09 HKT 2004
gentoo.cn,您好！ 在python中确定一个对象所占的内存数好像没有意义阿,列表占多少内存? 是放列表中元素的引用所用的内存大小?还是连元素所占内存一起算? python中所有对象继承自Object类(在python的c实现中就是struct Object),列表放的只是一个元素为 指向Object的指针数组(当然也包含Object类的数据,和其它一些类型相关的信息),具体一个元素占多少空间,真的很难说清楚,这和python的实现有关,和对象所含的内容有关. 在python中不用去关心内存的具体使用情况. 至于指针,谁说实现数据结构一定要指针? 用指针只是在c++和c中的方法,python根本用不到. ======= 2004-08-10 11:58:12 您在来信中写道：======= >C++不用指针没法实现树吗？ >同理，Python中使用C++中不用指针的树的算法不就可以了吗 >提示：使用数组的树 > >Jacob Fan wrote: > >>实现树和链表不需要指针,只要引用就可以了.所谓Python,Java一类的语言中没有指针是指你不能得到一个数据的确切的地址,不能做指针运算等等. 不是说你不能引用另外一个对象. >> >>class LinkedListNode: >> def __init__(self, nextNode): >> self.nextNode = nextNode >> >>----- Original Message ----- >>From: "limodou" <chatme at 263.net> >>To: <python-chinese at lists.python.cn> >>Sent: Tuesday, August 10, 2004 11:38 AM >>Subject: Re: [python-chinese] Python没有指针，怎么实现树和链表的结构？ >> >> >> >> >>>guochen,您好！ >>> >>>使用对象啊。对象可以是任意的东西啊。 >>> >>>a = [1,2,[3,4,[5,6]]] >>> >>>这样不就和链表一样吗？树也可以这样表示啊。 >>> >>>======= 2004-08-10 11:15:39 您在来信中写道：======= >>> >>> >>> >>>>python-chinese，您好！ >>>> >>>> >>>> >>>> 致 >>>>礼！ >>>> >>>> >>>> guochen >>>> guochen at 1218.com.cn >>>> 2004-08-10 >>>> >>>> >>>>_______________________________________________ >>>>python-chinese list >>>>python-chinese at lists.python.cn >>>>http://python.cn/mailman/listinfo/python-chinese >>>> >>>> >>>= = = = = = = = = = = = = = = = = = = = >>> >>> >>> 致 >>>礼！ >>> >>> >>> limodou >>> chatme at 263.net >>> 2004-08-10 >>> >>> >>> >>> >> >> >>-------------------------------------------------------------------------------- >> >> >> >> >>>_______________________________________________ >>>python-chinese list >>>python-chinese at lists.python.cn >>>http://python.cn/mailman/listinfo/python-chinese >>> >>> >>>------------------------------------------------------------------------ >>> >>>_______________________________________________ >>>python-chinese list >>>python-chinese at lists.python.cn >>>http://python.cn/mailman/listinfo/python-chinese >>> >>> > >_______________________________________________ >python-chinese list >python-chinese at lists.python.cn >http://python.cn/mailman/listinfo/python-chinese = = = = = = = = = = = = = = = = = = = = 致 礼！ hoxide hoxide_dirac at yahoo.com.cn 2004-08-10
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2004年08月10日 星期二 11:58
gentoo.cn gentoo.cn at 126.com
Tue Aug 10 11:58:12 HKT 2004
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Tue Aug 10 11:58:12 HKT 2004
C++不用指针没法实现树吗？ 同理，Python中使用C++中不用指针的树的算法不就可以了吗 提示：使用数组的树 Jacob Fan wrote: >实现树和链表不需要指针,只要引用就可以了.所谓Python,Java一类的语言中没有指针是指你不能得到一个数据的确切的地址,不能做指针运算等等. 不是说你不能引用另外一个对象. > >class LinkedListNode: > def __init__(self, nextNode): > self.nextNode = nextNode > >----- Original Message ----- >From: "limodou" <chatme at 263.net> >To: <python-chinese at lists.python.cn> >Sent: Tuesday, August 10, 2004 11:38 AM >Subject: Re: [python-chinese] Python没有指针，怎么实现树和链表的结构？ > > > > >>guochen,您好！ >> >>使用对象啊。对象可以是任意的东西啊。 >> >>a = [1,2,[3,4,[5,6]]] >> >>这样不就和链表一样吗？树也可以这样表示啊。 >> >>======= 2004-08-10 11:15:39 您在来信中写道：======= >> >> >> >>>python-chinese，您好！ >>> >>> >>> >>> 致 >>>礼！ >>> >>> >>> guochen >>> guochen at 1218.com.cn >>> 2004-08-10 >>> >>> >>>_______________________________________________ >>>python-chinese list >>>python-chinese at lists.python.cn >>>http://python.cn/mailman/listinfo/python-chinese >>> >>> >>= = = = = = = = = = = = = = = = = = = = >> >> >> 致 >>礼！ >> >> >> limodou >> chatme at 263.net >> 2004-08-10 >> >> >> >> > > >-------------------------------------------------------------------------------- > > > > >>_______________________________________________ >>python-chinese list >>python-chinese at lists.python.cn >>http://python.cn/mailman/listinfo/python-chinese >> >> >>------------------------------------------------------------------------ >> >>_______________________________________________ >>python-chinese list >>python-chinese at lists.python.cn >>http://python.cn/mailman/listinfo/python-chinese >> >>
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2004年08月10日 星期二 11:58
hoxide hoxide_dirac at yahoo.com.cn
Tue Aug 10 11:58:36 HKT 2004
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Tue Aug 10 11:58:36 HKT 2004
提问的兄弟, 思维不要被c++僵化啊. 没c++的很多繁杂概念,世界一样很好. ======= 2004-08-10 11:58:12 您在来信中写道：======= >C++不用指针没法实现树吗？ >同理，Python中使用C++中不用指针的树的算法不就可以了吗 >提示：使用数组的树 > >Jacob Fan wrote: > >>实现树和链表不需要指针,只要引用就可以了.所谓Python,Java一类的语言中没有指针是指你不能得到一个数据的确切的地址,不能做指针运算等等. 不是说你不能引用另外一个对象. >> >>class LinkedListNode: >> def __init__(self, nextNode): >> self.nextNode = nextNode >> >>----- Original Message ----- >>From: "limodou" <chatme at 263.net> >>To: <python-chinese at lists.python.cn> >>Sent: Tuesday, August 10, 2004 11:38 AM >>Subject: Re: [python-chinese] Python没有指针，怎么实现树和链表的结构？ >> >> >> >> >>>guochen,您好！ >>> >>>使用对象啊。对象可以是任意的东西啊。 >>> >>>a = [1,2,[3,4,[5,6]]] >>> >>>这样不就和链表一样吗？树也可以这样表示啊。 >>> >>>======= 2004-08-10 11:15:39 您在来信中写道：======= >>> >>> >>> >>>>python-chinese，您好！ >>>> >>>> >>>> >>>> 致 >>>>礼！ >>>> >>>> >>>> guochen >>>> guochen at 1218.com.cn >>>> 2004-08-10 >>>> >>>> >>>>_______________________________________________ >>>>python-chinese list >>>>python-chinese at lists.python.cn >>>>http://python.cn/mailman/listinfo/python-chinese >>>> >>>> >>>= = = = = = = = = = = = = = = = = = = = >>> >>> >>> 致 >>>礼！ >>> >>> >>> limodou >>> chatme at 263.net >>> 2004-08-10 >>> >>> >>> >>> >> >> >>-------------------------------------------------------------------------------- >> >> >> >> >>>_______________________________________________ >>>python-chinese list >>>python-chinese at lists.python.cn >>>http://python.cn/mailman/listinfo/python-chinese >>> >>> >>>------------------------------------------------------------------------ >>> >>>_______________________________________________ >>>python-chinese list >>>python-chinese at lists.python.cn >>>http://python.cn/mailman/listinfo/python-chinese >>> >>> > >_______________________________________________ >python-chinese list >python-chinese at lists.python.cn >http://python.cn/mailman/listinfo/python-chinese
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2004年08月10日 星期二 14:18
Jacob Fan jacob at exoweb.net
Tue Aug 10 14:18:36 HKT 2004
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Tue Aug 10 14:18:36 HKT 2004
既然有更直接的方法，你干吗那样做呢？ ;) ----- Original Message ----- From: "gentoo.cn" <gentoo.cn at 126.com> To: <python-chinese at lists.python.cn> Sent: Tuesday, August 10, 2004 11:58 AM Subject: Re: [python-chinese] Python没有指针，怎么实现树和链表的结构？ > C++不用指针没法实现树吗？ > 同理，Python中使用C++中不用指针的树的算法不就可以了吗 > 提示：使用数组的树 > > Jacob Fan wrote: > > >实现树和链表不需要指针,只要引用就可以了.所谓Python,Java一类的语言中没有指针是指你不能得到一个数据的确切的地址,不能做指针运算等等. 不是说你不能引用另外一个对象. > > > >class LinkedListNode: > > def __init__(self, nextNode): > > self.nextNode = nextNode > > > >----- Original Message ----- > >From: "limodou" <chatme at 263.net> > >To: <python-chinese at lists.python.cn> > >Sent: Tuesday, August 10, 2004 11:38 AM > >Subject: Re: [python-chinese] Python没有指针，怎么实现树和链表的结构？ > > > > > > > > > >>guochen,您好！ > >> > >>使用对象啊。对象可以是任意的东西啊。 > >> > >>a = [1,2,[3,4,[5,6]]] > >> > >>这样不就和链表一样吗？树也可以这样表示啊。 > >> > >>======= 2004-08-10 11:15:39 您在来信中写道：======= > >> > >> > >> > >>>python-chinese，您好！ > >>> > >>> > >>> > >>> 致 > >>>礼！ > >>> > >>> > >>> guochen > >>> guochen at 1218.com.cn > >>> 2004-08-10 > >>> > >>> > >>>_______________________________________________ > >>>python-chinese list > >>>python-chinese at lists.python.cn > >>>http://python.cn/mailman/listinfo/python-chinese > >>> > >>> > >>= = = = = = = = = = = = = = = = = = = = > >> > >> > >> 致 > >>礼！ > >> > >> > >> limodou > >> chatme at 263.net > >> 2004-08-10 > >> > >> > >> > >> > > > > > >-------------------------------------------------------------------------------- > > > > > > > > > >>_______________________________________________ > >>python-chinese list > >>python-chinese at lists.python.cn > >>http://python.cn/mailman/listinfo/python-chinese > >> > >> > >>------------------------------------------------------------------------ > >> > >>_______________________________________________ > >>python-chinese list > >>python-chinese at lists.python.cn > >>http://python.cn/mailman/listinfo/python-chinese > >> > >> > > _______________________________________________ > python-chinese list > python-chinese at lists.python.cn > http://python.cn/mailman/listinfo/python-chinese > >
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2004年08月10日 星期二 14:25
黎达文 ldw at suntektech.com
Tue Aug 10 14:25:33 HKT 2004
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Tue Aug 10 14:25:33 HKT 2004
用一颗树对应的完全树来按照层次编号就可以使用联系存储空间（比如数组）来表示树 啦。 -----邮件原件----- 发件人: python-chinese-bounces at lists.python.cn [mailto:python-chinese-bounces at lists.python.cn] 代表 gentoo.cn 发送时间: 2004年8月10日 11:58 收件人: python-chinese at lists.python.cn 主题: Re: [python-chinese] Python没有指针，怎么实现树和链表的结构？ C++不用指针没法实现树吗？ 同理，Python中使用C++中不用指针的树的算法不就可以了吗 提示：使用数组的树 Jacob Fan wrote: >实现树和链表不需要指针,只要引用就可以了.所谓Python,Java一类的语言中没有指针 是指你不能得到一个数据的确切的地址,不能做指针运算等等. 不是说你不能引用另外 一个对象. > >class LinkedListNode: > def __init__(self, nextNode): > self.nextNode = nextNode > >----- Original Message ----- >From: "limodou" <chatme at 263.net> >To: <python-chinese at lists.python.cn> >Sent: Tuesday, August 10, 2004 11:38 AM >Subject: Re: [python-chinese] Python没有指针，怎么实现树和链表的结构？ > > > > >>guochen,您好！ >> >>使用对象啊。对象可以是任意的东西啊。 >> >>a = [1,2,[3,4,[5,6]]] >> >>这样不就和链表一样吗？树也可以这样表示啊。 >> >>======= 2004-08-10 11:15:39 您在来信中写道：======= >> >> >> >>>python-chinese，您好！ >>> >>> >>> >>> 致 >>>礼！ >>> >>> >>> guochen >>> guochen at 1218.com.cn >>> 2004-08-10 >>> >>> >>>_______________________________________________ >>>python-chinese list >>>python-chinese at lists.python.cn >>>http://python.cn/mailman/listinfo/python-chinese >>> >>> >>= = = = = = = = = = = = = = = = = = = = >> >> >> 致 >>礼！ >> >> >> limodou >> chatme at 263.net >> 2004-08-10 >> >> >> >> > > >----------------------------------------------------------------------- >--------- > > > > >>_______________________________________________ >>python-chinese list >>python-chinese at lists.python.cn >>http://python.cn/mailman/listinfo/python-chinese >> >> >>---------------------------------------------------------------------- >>-- >> >>_______________________________________________ >>python-chinese list >>python-chinese at lists.python.cn >>http://python.cn/mailman/listinfo/python-chinese >> >> _______________________________________________ python-chinese list python-chinese at lists.python.cn http://python.cn/mailman/listinfo/python-chinese
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