[Python-Dev] more timely detection of unbound locals

[Eli Bendersky]

On Tue, May 10, 2011 at 16:11, R. David Murray <rdmurray at bitdance.com>wrote:

> On Tue, 10 May 2011 08:36:38 +0300, Eli Bendersky <eliben at gmail.com>
> wrote:
> > With an unlimited error message length it could make sense to say "Hey, I
> > see 'x' may be assigned in this scope, so I mark it local. But this
> access
> > to 'x' happens before assignment - so ERROR". This isn't realistic, of
> > course, so I'm wondering:
> >
> > 1. Does this error message (although unrealistic) capture all possible
> > appearances of UnboundLocalError?
> > 2. If the answer to (1) is yes - could it be usefully shortened to be
> > clearer than the current "local variable referenced before assignment"?
> >
> > This may not be possible, of course, but it doesn't harm trying :-)
>
> How about:
>
> "reference to variable 'y' precedes an assignment that makes it a local
> variable"
>  <http://www.bitdance.com>


Yes, this is much better and not too long IMHO
Eli
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