[Numpy-discussion] ANN: Numpy 1.6.0 beta 2

[Mark Wiebe]

On Tue, Apr 5, 2011 at 7:21 PM, Christoph Gohlke <cgohlke at uci.edu> wrote:

>
>
> On 4/5/2011 6:46 PM, Mark Wiebe wrote:
> > On Tue, Apr 5, 2011 at 5:07 PM, Christoph Gohlke <cgohlke at uci.edu
> > <mailto:cgohlke at uci.edu>> wrote:
> >
> >
> >
> >     On 4/5/2011 4:05 PM, Mark Wiebe wrote:
> >     >  On Mon, Apr 4, 2011 at 9:10 PM, Christoph Gohlke <cgohlke at uci.edu
> >     <mailto:cgohlke at uci.edu>
> >     >  <mailto:cgohlke at uci.edu <mailto:cgohlke at uci.edu>>> wrote:
> >     >
> >     >
> >     >  <snip>
> >     >
> >     >      A few numpy tests fail on win-amd64:
> >     >
> >     >  <snip>
> >     >
> >     >
> >
> ======================================================================
> >     >      FAIL: test_iterator.test_iter_broadcasting_errors
> >     >
> >
> ----------------------------------------------------------------------
> >     >      Traceback (most recent call last):
> >     >         File "X:\Python26-x64\lib\site-packages\nose\case.py", line
> >     187, in
> >     >      runTest
> >     >           self.test(*self.arg)
> >     >         File
> >     >
>  "X:\Python26-x64\lib\site-packages\numpy\core\tests\test_iterator.py",
> >     >      line 639, in test_iter_broadcasting_errors
> >     >  'Message "%s" doesn\'t contain operand shape (2,3)' % msg)
> >     >         File
> >     "X:\Python26-x64\lib\site-packages\numpy\testing\utils.py", line
> >     >      34, in assert_
> >     >           raise AssertionError(msg)
> >     >      AssertionError: Message "non-broadcastable output operand with
> >     shape
> >     >      (%lld,%lld)
> >     >        doesn't match the broadcast shape (%lld,%lld,%lld)" doesn't
> >     contain
> >     >      operand shape (2,3)
> >     >
> >     >
> >     >  I've pushed a fix for this to the 1.6.x branch, can you confirm
> >     that it
> >     >  works on win-amd64?
> >     >
> >     >  Thanks,
> >     >  Mark
> >     >
> >     >  <snip>
> >     >
> >
> >     Sorry, I forgot to mention that this test failed on 64-bit Python 2.6
> >     only. I now recognize it is due to a known issue with Python's
> >     PyErr_Format function <http://bugs.python.org/issue7228>.
> Unfortunately
> >     the fix will not be backported to Python 2.6. Maybe this test could
> be
> >     marked as known failure on win-amd64-py2.6?
> >
> >     Could you please revert your changes or set the format specifier to
> >     "%lld"? "%I64d" is not supported by PyErr_Format.
> >
> >
> > I've committed an attempted workaround using the %zd formatter, can you
> > check whether it works on 64-bit Windows Python 2.6 now?
> >
> > Thanks,
> > Mark
> >
>
> I have not tried but I do not expect it to work. According to
> <http://docs.python.org/c-api/string.html> the "%zd" format is 'exactly
> equivalent to printf("%zd")'. The 'z' prefix character is C99 AFAIK and
> not supported by Visual Studio compilers
> <http://msdn.microsoft.com/en-us/library/xdb9w69d%28v=VS.90%29.aspx>.


I think there's a good chance it will work, since the CPython code is
re-interpreting the format codes itself. In the Python 2.6 code, it looks
like it will become %Id on Windows, which would be correct.

-Mark
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