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Wed Jul 27 04:04:20 CEST 2011 · https://mail.python.org/pipermail/python-dev/2011-July/112547.html

On Tue, Jul 26, 2011 at 17:41, Nick Coghlan <ncoghlan at gmail.com> wrote:

> On Wed, Jul 27, 2011 at 12:10 AM, Éric Araujo <merwok at netwok.org> wrote:
> > Le 26/07/2011 15:30, Antoine Pitrou a écrit :
> >> Actually, you want %a for non-ASCII messages to be escaped.
> >
> > Thanks for the reminder, I should use more %a instead of %r.  In the
> > packaging code however, we can’t, given that we want to backport.
> >
> >> (however, there's hardly any reason to worry about it when it comes to
> >> stdlib module names)
> >
> > I lacked context to see that.  If the code in question only ever handles
> > stdlib modules, then okay.
>
> The other reason to use %r is to get the enclosing quotes in the
> displayed message. That reason applies even in cases like this where
> the escaping aspect isn't a concern.
>

And then you make it {!r} so you can use str.format and you complete the
tweak of the string formatting! =) Seriously, though, it wouldn't hurt to
update it to use str.format().
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Showing content from https://mail.python.org/pipermail/python-dev/2011-July/112547.html below:

[Python-Dev] [Python-checkins] cpython: Issue #11049: adding some tests to test.support