On Tue, Dec 11, 2007 at 08:36:54AM -0600, Chris Mellon wrote regarding Re: Dumb newbie back in shell: > Delivered-To: [EMAIL PROTECTED] > Date: Tue, 11 Dec 2007 08:36:54 -0600 > From: "Chris Mellon" <[EMAIL PROTECTED]> > To: "python-list@python.org" <python-list@python.org> > Subject: Re: Dumb newbie back in shell > In-Reply-To: <[EMAIL PROTECTED]> > Precedence: list > List-Id: General discussion list for the Python programming language > <python-list.python.org> > List-Unsubscribe: <http://mail.python.org/mailman/listinfo/python-list>, > <mailto:[EMAIL PROTECTED]> > List-Archive: <http://mail.python.org/pipermail/python-list> > List-Post: <mailto:python-list@python.org> > List-Help: <mailto:[EMAIL PROTECTED]> > List-Subscribe: <http://mail.python.org/mailman/listinfo/python-list>, > <mailto:[EMAIL PROTECTED]> > Errors-To: [EMAIL PROTECTED] > > On Dec 11, 2007 8:23 AM, J. Clifford Dyer <[EMAIL PROTECTED]> wrote: > > The code you just posted doesn't compile successfully. > > > > It *compiles* fine, but it'll raise an error when run. > > > However, in your code, you probably have char_ptr defined at the module > > level, and you're confused because you didn't declare it as global. Am I > > right? My crystal ball has a smudge on it, but I think I can still see > > okay. > > > > I assume that's what he think he's seeing also. > > > You can still reference module level variables that aren't declared as > > global, but you can't assign to them. Or rather, when you try to, you > > create a new local variable that shadows the global one. > > > > No, the determination of what names are local and which are global > happens at compile time. The code as posted will not run correctly. It > could run if it weren't in a function and were executed in global > scope. > > What's probably happening is that line_ptr < last_line is not true and > the body of the function isn't executed at all. The unbound local > exception is a runtime error that occurs when the local is accessed, > not when the function is compiled.
Drat! You're right. I tried it in the interactive interpeter, and the function compiled just fine. I tried calling the function and got an "UnboundLocalError." I think I need to go sit in the corner and review the documentation. Sorry all. Disregard my previous post. Chris, many thanks for your corrections. Cheers, Cliff -- http://mail.python.org/mailman/listinfo/python-list
