It looks like swig is throwing an assert when it tries to convert storage.i. I can't imagine this has anything to do with your installing numpy. What version of swig are you using?

A more complete error message is below:

make[8]: Entering directory `/home/mininet/ripcord-nox/build/src/nox/netapps/storage'
/usr/bin/swig -c++ -python                     \
    -I../../../../../src/nox/netapps/storage/../                        \
    -outdir ./.                        \
    -o pystorage_wrap.cc                        \
-c++ -python -module pystorage ../../../../../src/nox/netapps/storage/storage.i swig: Modules/lang.cxx:330: Language::Language(): Assertion `!this_' failed.
make[8]: *** [pystorage.py] Aborted
make[8]: Leaving directory `/home/mininet/ripcord-nox/build/src/nox/netapps/storage'

On Wed, Jul 14, 2010 at 3:02 PM, Albert Wu <awu123...@gmail.com <mailto:awu123...@gmail.com>> wrote:

    I tried to do this and re-build NOX.
    The commands I used to install numpy was:

    sudo apt-get install python-numpy

    The error in NOX was:

    swig: Modules/lang.css:330: Language::Language(): Assertion
    '!this_' failed.

    Do you know what this means?

    Thanks,
    Albert


    On Wed, Jul 14, 2010 at 12:40 PM, Martin Casado <cas...@nicira.com
    <mailto:cas...@nicira.com>> wrote:

        Yeah, we've run into this problem before.  I believe the
        segfault is in numpy and we got around it by compiling against
        a more recent version of numpy.

            Hey,

            I put this line of code

            import matplotlib

            into my NOX module (Python graphing utility).
            Now, when I start NOX, it exits on a segmentation fault.

            Does anyone know why this is happening?

            Thanks,

            Albert
            
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