Thomas Heller wrote:
Guido van Rossum schrieb:
On Thu, Jul 17, 2008 at 9:25 AM, Raymond Hettinger <[EMAIL PROTECTED]> wrote:
From: "Eric Smith" <[EMAIL PROTECTED]>
I have this ready for checkin (with docs and tests).  I'd like to get it
in for this beta, since it does involved changed behavior, no matter how
small ('1e+100' becomes '1E+100' with '%F').  But it relies on the
platform's vsnprintf to do the right thing with 'F', so I'm worried
about breakages on platforms I don't have access to.  Resolving those
issues might take a few days.

Any advice on checking this in now, or waiting until after this beta is
released?
I recommend doing it after the release.  It's unlikely to be exercised
much by the beta users so there's no real advantage.  If you wait
until afterwards, then there is time to let the buildbots have a go
at it and reveal any cross-platform issues.

Besides, Barry said something about getting meaner.
Would hate to find out what he meant the hard way ;-)
I'd advise the opposite -- check it in now. It's not going to break
anything, and if it is, let's find out sooner rather than later.


Before we get old waiting for the windows buildbots, here how test_format
fails now (on XP SP2 x86, trunk rev 65072:

c:\svn\trunk\PCbuild>.\\python_d  -E -tt ../lib/test/regrtest.py test_format
test_format
test test_format produced unexpected output:
**********************************************************************
'%F' % (1.0,) == '' != '1.000000'
u'%F' % (1.0,) == u'' != '1.000000'
'%f' % (nan,) == '-1.#IND00' != 'nan'
u'%f' % (nan,) == u'-1.#IND00' != 'nan'
'%F' % (nan,) == '' != 'NAN'
u'%F' % (nan,) == u'' != 'NAN'
'%f' % (inf,) == '1.#INF' != 'inf'
u'%f' % (inf,) == u'1.#INF' != 'inf'
'%F' % (inf,) == '1.#INF' != 'INF'
u'%F' % (inf,) == u'1.#INF' != 'INF'

**********************************************************************
1 test failed:
    test_format
[23521 refs]

c:\svn\trunk\PCbuild>

Windows vsnprintf does not support '%F' at all, and '%f' does not
behave as expected with nan and inf.


I was afraid of that. I'll back these out until I can dig up a Windows box to test on.

Thanks for checking this.

Eric.

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