[Numpy-discussion] ANN: Numpy 1.6.1 release candidate 1
Mon Jun 20 14:17:47 CDT 2011
On Mon, Jun 20, 2011 at 4:20 PM, Bruce Southey <email@example.com> wrote:
> On 06/19/2011 05:21 AM, Ralf Gommers wrote:
> On Tue, Jun 14, 2011 at 5:28 AM, Bruce Southey <firstname.lastname@example.org> wrote:
>> On Mon, Jun 13, 2011 at 8:31 PM, Pauli Virtanen <email@example.com> wrote:
>> > On Mon, 13 Jun 2011 11:08:18 -0500, Bruce Southey wrote:
>> > [clip]
>> >> OSError:
>> >> /usr/local/lib/python3.2/site-packages/numpy/core/multiarray.pyd:
>> >> open shared object file: No such file or directory
>> > I think that's a result of Python 3.2 changing the extension module
>> > file naming scheme (IIRC to a versioned one).
>> > The '.pyd' ending and its Unix counterpart are IIRC hardcoded to the
>> > failing test, or some support code in Numpy. Clearly, they should
>> > ask Python how it names the extensions modules. This information may be
>> > available somewhere in the `sys` module.
>> > _______________________________________________
>> > NumPy-Discussion mailing list
>> > NumPy-Discussion@scipy.org
>> > http://mail.scipy.org/mailman/listinfo/numpy-discussion
>> I am impressed yet again!
>> It really saved a lot of time to understand the reason.
>> A quick comparison between Python versions:
>> Python2.7: multiarray.so
>> Python3.2: multiarray.cpython-32m.so
>> Search for the extension leads to PEP 3149
> That looked familiar:
>> This is POSIX only which excludes windows. I tracked it down to the
>> list 'libname_ext' defined in file "numpy/ctypeslib.py" line 100:
>> libname_ext = ['%s.so' % libname, '%s.pyd' % libname]
>> On my 64-bit Linux system, I get the following results:
>> $ python2.4 -c "from distutils import sysconfig; print
>> $ python2.5 -c "from distutils import sysconfig; print
>> $ python2.7 -c "from distutils import sysconfig; print
>> $ python3.1 -c "from distutils import sysconfig;
>> $ python3.2 -c "from distutils import sysconfig;
>> My Windows 32-bit Python2.6 install:
>> >>> from distutils import sysconfig
>> >>> sysconfig.get_config_var('SO')
>> Making the bug assumption that other OSes including 32-bit and 64-bit
>> versions also provide the correct suffix, this suggest adding the
>> import and modification as:
>> import from distutils import sysconfig
>> libname_ext = ['%s%s' % (libname, sysconfig.get_config_var('SO'))]
>> Actually if that works for Mac, Sun etc. then 'load_library' function
>> could be smaller.
> The issue is that libraries built as Python extensions have the extra
> ".cpython-mu32", but other libraries on your system don't. And
> sysconfig.get_config_var('SO') is used for both. I don't see another config
> var that allows to distinguish between the two. Unless on platforms where it
> matters there are separate return values in sysconfig.get_config_vars('SO').
> What do you get for that on Linux?
> The logic of figuring out the right extension string should not be
> duplicated, distutils.misc_util seems like a good place for it. Can you test
> if this works for you:
>> Finally the test_basic2 in "tests/test_ctypeslib.py" needs to be
>> changed as well because it is no longer correct. Just commenting out
>> the 'fix' appears to work.
>> It works in the case of trying to load multiarray, but the function
> under test would still be broken.
> NumPy-Discussion mailing listNumPy-Discussion@scipy.orghttp://mail.scipy.org/mailman/listinfo/numpy-discussion
> So how do I get these changes and apply them to the release candidate?
> (This part of the development/test workflow needs some attention.)
> You could just have tested that branch, it should have the same issue. To
test on 1.6.x, you can just checkout 1.6.x and cherry-pick the relevant
commit. I've done that for you at
For completeness, this is how you grab it:
$ git remote add rgommers https://github.com/rgommers/numpy.git
$ git fetch rgommers
$ git co rgommers/sharedlib-ext-1.6.x
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