Path: csiph.com!usenet.pasdenom.info!aioe.org!news.stack.nl!newsfeed.xs4all.nl!newsfeed2.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path: <rosuav@gmail.com>
X-Original-To: python-list@python.org
Delivered-To: python-list@mail.python.org
X-Spam-Status: OK 0.012
X-Spam-Evidence: '*H*': 0.98; '*S*': 0.00; 'assign': 0.07; 'problem:': 0.07; 'assigning': 0.09; 'python': 0.11; 'def': 0.12; '23,': 0.16; 'from:addr:rosuav': 0.16; 'from:name:chris angelico': 0.16; 'iteration': 0.16; 'node.': 0.16; 'subject:???': 0.16; 'traceback.': 0.16; 'exception': 0.16; 'wrote:': 0.18; 'variable': 0.18; 'thu,': 0.19; 'written': 0.21; 'saying': 0.22; 'print': 0.22; 'post': 0.26; 'skip:" 20': 0.27; 'header:In-Reply-To:1': 0.27; 'function': 0.29; "doesn't": 0.30; 'message- id:@mail.gmail.com': 0.30; 'code': 0.31; 'node': 0.31; 'class': 0.32; 'actual': 0.34; 'received:google.com': 0.35; 'really': 0.36; 'method': 0.36; 'error.': 0.37; 'to:addr:python-list': 0.38; 'pm,': 0.38; 'to:addr:python.org': 0.39; 'unable': 0.39; 'how': 0.40; 'skip:u 10': 0.60; 'skip:n 30': 0.60; "you're": 0.61; 'name': 0.63; 'end.': 0.84; 'local,': 0.84; 'subject:..': 0.84; '2013': 0.98
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=zbhnDSdv3UKdJNnMg72iuziUwBGa7um6n8xiaU9oYnk=; b=ZSBN3s1rdj+4R+lv1xNeLEifk7Ek8DJQWSde263TfK1ir9VdAp5pgEifYF13UrL6aV wOTi5UYasoDuoIV6J6VVcy8PyrDolbtW+m/FAqZfX2NBI5XwUz/xK2PaiHtrcLJgKawk KrYe0Gc4cWG/ed/v2frL6pkozF+5Rq+7WwDYEbD8spTYclT3YM0113ER9N8jgvMd/YPm FvRqTIPWQ0cnNgdvzPh8CcN4K8z4HXSEyJtjA/bjXWUjmecYwz3x70rh4yBRiS9SMqjg N1GCRIJ0N4hIbsuLeW8GOiAeFyiZ5zr7y3E83clRfKercElJ8qmKQaUUyvCN7RssdrwK XDZw==
MIME-Version: 1.0
X-Received: by 10.52.175.200 with SMTP id cc8mr3992792vdc.94.1369303227147; Thu, 23 May 2013 03:00:27 -0700 (PDT)
In-Reply-To: <913d7fc1-4608-4ff5-8b51-2ae2cd67781a@googlegroups.com>
References: <913d7fc1-4608-4ff5-8b51-2ae2cd67781a@googlegroups.com>
Date: Thu, 23 May 2013 20:00:27 +1000
Subject: Re: Scope of a class..help???
From: Chris Angelico <rosuav@gmail.com>
To: python-list@python.org
Content-Type: text/plain; charset=ISO-8859-1
X-BeenThere: python-list@python.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe: <http://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive: <http://mail.python.org/pipermail/python-list/>
List-Post: <mailto:python-list@python.org>
List-Help: <mailto:python-list-request@python.org?subject=help>
List-Subscribe: <http://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups: comp.lang.python
Message-ID: <mailman.2005.1369303610.3114.python-list@python.org>
Lines: 21
NNTP-Posting-Host: 2001:888:2000:d::a6
X-Trace: 1369303610 news.xs4all.nl 15999 [2001:888:2000:d::a6]:35784
X-Complaints-To: abuse@xs4all.nl
Xref: csiph.com comp.lang.python:45790

On Thu, May 23, 2013 at 7:51 PM,  <lokeshkoppaka@gmail.com> wrote:
> i had written the following code i am unable to create the instance of the class "Node" in the method "number_to_LinkedList" can any one help me how to do ??
> and what is the error??

It would really help if you post the actual exception and traceback.
It's UnboundLocal, not Unbounded... and here's the problem:

> def number_to_LinkedList(numbers):
>       head_node = Node() #unable to create the instance saying UnboundedLocal
>       while Node:
>         print Node.data
>         Node = Node.next

You're assigning to Node. I think you mean to have some other local
variable here, for the iteration at the end. Since you assign to the
name Node inside the function (and don't have a global declaration),
the name Node is local to the function. Python doesn't let you
reference the global "prior to" shadowing it with the local, so you
get this error.

ChrisA