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From: Peter Otten <__peter__@web.de>
Newsgroups: comp.lang.python
Subject: Re: a clarification on the "global" statement sought
Date: Fri, 11 Mar 2016 10:23:25 +0100
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Xref: csiph.com comp.lang.python:104600

Charles T. Smith wrote:

> On Fri, 11 Mar 2016 19:29:20 +1100, Chris Angelico wrote:
> 
>> Usefully? Never.
>> 
>> Simple question - simple answer :)
>> 
>> ChrisA
> 
> 
> Right, that was the expected answer as well.  I just ran into that in
> legacy code, checked out the documentation and couldn't really make that
> out.  So I figured I better ask here before I end up with egg on my face
> 
> :)
> 
> Thanks folks.
> 
> Actually, it would be nice if there were a -lint or -warnings flag
> for such cases, a la perl or gcc.

There is an external tool called pylint that among other things detects 
superfluous global statements.