linux-kernel - Re: [PATCH] scripts/spdxcheck: make python3 compliant

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Message-ID: <20181108062200.ytkezavtcaypdlat@pengutronix.de>
Date:   Thu, 8 Nov 2018 07:22:00 +0100
From:   Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Joe Perches <joe@...ches.com>, kernel@...gutronix.de,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] scripts/spdxcheck: make python3 compliant

Hello Andrew,

On Wed, Nov 07, 2018 at 03:32:51PM -0800, Andrew Morton wrote:
> On Tue, 23 Oct 2018 09:08:02 +0200 Uwe Kleine-König <u.kleine-koenig@...gutronix.de> wrote:
> 
> > Without this change the following happens when using Python3 (3.6.6):
> > 
> > 	$ echo "GPL-2.0" | python3 scripts/spdxcheck.py -
> > 	FAIL: 'str' object has no attribute 'decode'
> > 	Traceback (most recent call last):
> > 	  File "scripts/spdxcheck.py", line 253, in <module>
> > 	    parser.parse_lines(sys.stdin, args.maxlines, '-')
> > 	  File "scripts/spdxcheck.py", line 171, in parse_lines
> > 	    line = line.decode(locale.getpreferredencoding(False), errors='ignore')
> > 	AttributeError: 'str' object has no attribute 'decode'
> > 
> > So as the line is already a string, there is no need to decode it and
> > the line can be dropped.
> 
> I suppose people might want to run spdxcheck.py against (say) 4.19.x
> using python3.  So I'll add a cc:stable here, OK?

Not sure if people call spdxcheck.py stand-alone. checkpatch.pl calls it
using "python scripts/spdxcheck.py" which AFAICT should still be python2
on all machines. The shebang-line also uses "python" and not "python3".

So for now this is only cosmetic (unless there are distros that install
Python 3 as "python").

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |