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From: Fam Zheng <famz@redhat.com>
To: Kevin Wolf <kwolf@redhat.com>
Cc: ldoktor@redhat.com, ehabkost@redhat.com, stefanha@gmail.com,
	Amador Pahim <apahim@redhat.com>,
	armbru@redhat.com, qemu-devel@nongnu.org, crosa@redhat.com,
	mreitz@redhat.com
Subject: Re: [Qemu-devel] [PATCH v8 04/13] qemu.py: improve message on negative exit code
Date: Mon, 18 Sep 2017 15:03:07 +0800	[thread overview]
Message-ID: <20170918070307.GH15551@lemon.lan> (raw)
In-Reply-To: <20170918064439.GB31915@localhost.localdomain>

On Mon, 09/18 08:44, Kevin Wolf wrote:
> > > > > +            self._qemu_full_args = (self._wrapper + [self._binary] +
> > > > > +                                    self._base_args() + self._args)
> > > > 
> > > > The parentheses seem superfluous. With those removed:
> > > > 
> > > > Reviewed-by: Fam Zheng <famz@redhat.com>
> > > 
> > > Congratulations, with this advice you just killed all Python-based
> > > qemu-iotests and filled up my inbox with CI failure messages. :-)
> > 
> > Oops. Why doesn't python understand such multi line expressions
> > impllied by "+" just like in "[,]"?
> 
> To be honest, I didn't know that either until now. But apparently the
> different kinds of brackets (including those around function arguments)
> are the only things that allow multiline expressions in Python.

Yes, and now I read that PEP recommends using brackets for multilines compared
to backslashes. I was totally wrong with this advice.

Fam

  reply	other threads:[~2017-09-18  7:03 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-09-01 11:28 [Qemu-devel] [PATCH v8 00/13] scripts/qemu.py fixes and cleanups Amador Pahim
2017-09-01 11:28 ` [Qemu-devel] [PATCH v8 01/13] qemu.py: fix is_running() return before first launch() Amador Pahim
2017-09-05  2:57   ` Fam Zheng
2017-09-01 11:28 ` [Qemu-devel] [PATCH v8 02/13] qemu.py: avoid writing to stdout/stderr Amador Pahim
2017-09-05  2:59   ` Fam Zheng
2017-09-21 10:35   ` Kevin Wolf
2017-09-21 12:17     ` Eduardo Habkost
2017-09-01 11:28 ` [Qemu-devel] [PATCH v8 03/13] qemu.py: use os.path.null instead of /dev/null Amador Pahim
2017-09-01 11:39   ` Philippe Mathieu-Daudé
2017-09-05  2:59   ` Fam Zheng
2017-09-01 11:28 ` [Qemu-devel] [PATCH v8 04/13] qemu.py: improve message on negative exit code Amador Pahim
2017-09-05  3:02   ` Fam Zheng
2017-09-18  5:18     ` Kevin Wolf
2017-09-18  5:39       ` Fam Zheng
2017-09-18  6:44         ` Kevin Wolf
2017-09-18  7:03           ` Fam Zheng [this message]
2017-09-01 11:28 ` [Qemu-devel] [PATCH v8 05/13] qemu.py: include debug information on launch error Amador Pahim
2017-09-05  3:05   ` Fam Zheng
2017-09-01 11:28 ` [Qemu-devel] [PATCH v8 06/13] qemu.py: make sure we only remove files we create Amador Pahim
2017-09-05  3:18   ` Fam Zheng
2017-09-14 19:38     ` Amador Pahim
2017-09-14 19:46       ` Eduardo Habkost
2017-09-14 20:05         ` Amador Pahim
2017-09-14 20:18           ` Eduardo Habkost
2017-09-14 20:21             ` Amador Pahim
2017-09-01 11:28 ` [Qemu-devel] [PATCH v8 07/13] qemu.py: close _qemu_log_path on cleanup Amador Pahim
2017-09-05  3:05   ` Fam Zheng
2017-09-01 11:28 ` [Qemu-devel] [PATCH v8 08/13] qemu.py: refactor launch() Amador Pahim
2017-09-05  3:06   ` Fam Zheng
2017-09-01 11:28 ` [Qemu-devel] [PATCH v8 09/13] qemu.py: always cleanup on shutdown() Amador Pahim
2017-09-05  3:07   ` Fam Zheng
2017-09-01 11:28 ` [Qemu-devel] [PATCH v8 10/13] qemu.py: use poll() instead of 'returncode' Amador Pahim
2017-09-05  3:07   ` Fam Zheng
2017-09-01 11:28 ` [Qemu-devel] [PATCH v8 11/13] qemu.py: cleanup redundant calls in launch() Amador Pahim
2017-09-05  3:20   ` Fam Zheng
2017-09-01 11:28 ` [Qemu-devel] [PATCH v8 12/13] qemu.py: launch vm only if it's not running Amador Pahim
2017-09-05  3:19   ` Fam Zheng
2017-09-01 11:28 ` [Qemu-devel] [PATCH v8 13/13] qemu.py: don't launch again before shutdown() Amador Pahim
2017-09-05  3:22   ` Fam Zheng
2017-09-05 10:02 ` [Qemu-devel] [PATCH v8 00/13] scripts/qemu.py fixes and cleanups Stefan Hajnoczi
2017-09-14 19:31 ` Eduardo Habkost

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