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Groups > comp.lang.python > #45790
| References | <913d7fc1-4608-4ff5-8b51-2ae2cd67781a@googlegroups.com> |
|---|---|
| Date | 2013-05-23 20:00 +1000 |
| Subject | Re: Scope of a class..help??? |
| From | Chris Angelico <rosuav@gmail.com> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.2005.1369303610.3114.python-list@python.org> (permalink) |
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
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Scope of a class..help??? lokeshkoppaka@gmail.com - 2013-05-23 02:51 -0700
Re: Scope of a class..help??? Chris Angelico <rosuav@gmail.com> - 2013-05-23 20:00 +1000
Re: Scope of a class..help??? Peter Otten <__peter__@web.de> - 2013-05-23 12:18 +0200
Re: Scope of a class..help??? lokeshkoppaka@gmail.com - 2013-05-23 03:23 -0700
Re: Scope of a class..help??? Chris Angelico <rosuav@gmail.com> - 2013-05-23 20:27 +1000
Re: Scope of a class..help??? lokeshkoppaka@gmail.com - 2013-05-23 03:25 -0700
Re: Scope of a class..help??? Chris Angelico <rosuav@gmail.com> - 2013-05-23 21:40 +1000
Re: Scope of a class..help??? Tim Roberts <timr@probo.com> - 2013-05-23 22:05 -0700
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