linux-kernel - Re: [PATCH] docs: license-rules.txt: cover SPDX headers on Python scripts

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Message-ID: <20190905162810.2388d532@coco.lan>
Date:   Thu, 5 Sep 2019 16:28:10 -0300
From:   Mauro Carvalho Chehab <mchehab+samsung@...nel.org>
To:     Jonathan Corbet <corbet@....net>
Cc:     Linux Media Mailing List <linux-media@...r.kernel.org>,
        Mauro Carvalho Chehab <mchehab@...radead.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Joe Perches <joe@...ches.com>, linux-kernel@...r.kernel.org,
        Jessica Yu <jeyu@...nel.org>,
        Federico Vaga <federico.vaga@...a.pv.it>,
        Thomas Gleixner <tglx@...utronix.de>, linux-doc@...r.kernel.org
Subject: Re: [PATCH] docs: license-rules.txt: cover SPDX headers on Python
 scripts

Em Thu, 5 Sep 2019 06:57:01 -0600
Jonathan Corbet <corbet@....net> escreveu:

> On Thu,  5 Sep 2019 06:23:13 -0300
> Mauro Carvalho Chehab <mchehab+samsung@...nel.org> wrote:
> 
> > Python's PEP-263 [1] dictates that an script that needs to default to
> > UTF-8 encoding has to follow this rule:
> > 
> > 	'Python will default to ASCII as standard encoding if no other
> > 	 encoding hints are given.
> > 
> > 	 To define a source code encoding, a magic comment must be placed
> > 	 into the source files either as first or second line in the file'  
> 
> So this is only Python 2, right?  Python 3 is UTF8 by default.  Given that
> Python 2 is EOL in January, is this something we should be concerned
> about?  Or should we instead be making sure that all the Python we have
> in-tree works properly with Python 3 and be done with it?

I don't think we can count that python 3 uses utf-8 per default.

I strongly suspect that, if one uses a Python3 version < 3.7, it will
still default to ASCII.

On a quick look, the new UTF-8 mode was added on PEP-540:

	https://www.python.org/dev/peps/pep-0540/

Such change happened at Python 3.7. 

Yet, according with PEP, it defaults to off, unless when using POSIX 
locale.

Thanks,
Mauro