[Numpy-discussion] numpy distutils log error with easy_install

[Ralf Gommers]

On Wed, Oct 3, 2012 at 11:29 PM, Matthew Brett <matthew.brett at gmail.com>wrote:

> Hi,
>
> On Wed, Oct 3, 2012 at 10:17 PM, Ralf Gommers <ralf.gommers at gmail.com>
> wrote:
> >
> >
> > On Mon, Oct 1, 2012 at 10:47 PM, Matthew Brett <matthew.brett at gmail.com>
> > wrote:
> >>
> >> Hi,
> >>
> >> On Mon, Oct 1, 2012 at 9:42 PM, Matthew Brett <matthew.brett at gmail.com>
> >> wrote:
> >> > Hi,
> >> >
> >> > One of our kind users pointed out an error when using easy_install to
> >> > install our package nipy.   I've reproduced it now on a bare package
> >> > using numpy distutils and having a trivial extension:
> >> >
> >> > https://github.com/matthew-brett/apkg
> >> >
> >> > To reproduce:
> >> >
> >> > git clone git://github.com/mathew-brett/apkg.git
> >> >
> >> > easy_install apkg
> >> >
> >> > You should get something like this:
> >> >
> >> > Processing apkg
> >> > Running setup.py -q bdist_egg --dist-dir
> >> > /home/mb312/tmp/apkg/egg-dist-tmp-T5yjuB
> >> > Appending apkg configuration to
> >> > Ignoring attempt to set 'name' (from '' to 'apkg')
> >> > zip_safe flag not set; analyzing archive contents...
> >> > Adding apkg 0.1 to easy-install.pth file
> >> >
> >> > Installed
> >> >
> /home/mb312/.virtualenvs/np-1.6.2/lib/python2.6/site-packages/apkg-0.1-py2.6-linux-i686.egg
> >> > Processing dependencies for apkg==0.1
> >> > Finished processing dependencies for apkg==0.1
> >> >
> >> >
> /home/mb312/.virtualenvs/np-1.6.2/lib/python2.6/site-packages/numpy/distutils/misc_util.py:252:
> >> > RuntimeWarning: Parent module 'numpy.distutils' not found while
> >> > handling absolute import
> >> >   from numpy.distutils import log
> >> >
> >> > Note the last error.
> >>
> >> Sorry, correcting myself - it's (obviously) a Warning rather than an
> >> error, but still distracting, and it would be good to avoid it if
> >> possible...
> >
> >
> > The combination of two or all of atexit.register, easy_install and
> > virtualenv seems to be causing this. Unless someone feels like digging
> into
> > that (I certainly don't), there are two easy solutions:
> > 1. Silence the warning.
>
> Sorry - I am not sure what you mean.  The problem here is the user who
> assumes that something bad happened when running easy_install - which
> is what happened in the case of nipy.  Is there some way of silencing
> this (specific) warning from within setup.py?
>
> > 2. Remove the offending import and the logging. This will only remove the
> > line "removing: _configtest.c _configtest.o" from the build log (x20).
>
> Which import did you mean?  I think I need all the imports I'm using
> in the example minimal package.  I'm not explicitly importing logging
> for example.
>

The import that's indicated in the warning, on line 252 of
numpy/distutils/misc_util.py. Relevant code:

_temporary_directory = None
def clean_up_temporary_directory():
    from numpy.distutils import log    # CAUSES RUNTIME WARNING
    global _temporary_directory
    if not _temporary_directory:
        return
    log.debug('removing %s', _temporary_directory)
    try:
        shutil.rmtree(_temporary_directory)
    except OSError:
        pass
    _temporary_directory = None

def make_temp_file(suffix='', prefix='', text=True):
    global _temporary_directory
    if not _temporary_directory:
        _temporary_directory = tempfile.mkdtemp()
        atexit.register(clean_up_temporary_directory)

Ralf



> Thanks for looking into it...
>
> Cheers,
>
> Matthew
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