Originally posted by: Teej42

The error message is:

$ pip_64
/opt/freeware/lib64/python2.7/site-packages/_xmlplus/parsers/expat.py:4: RuntimeWarning: Python C API version mismatch for module pyexpat: This Python has API version 1013, module pyexpat has version 2.
  from pyexpat import *
Memory fault(coredump)

I can provide the full install list to get this, but basically get python-pip-10.0.1-1.aix6.1.noarch.rpm and all depedencies for this, and run pip_64 instead of pip.

This behavior is replicated on two separate AIX 7.1 servers.  We need pip_64 to install and compile modules in 64 bits for Python.

Please confirm.  Thanks.

Originally posted by: AyappanP

The problem seems to be happening because of python-xml package. This is actually PyXML package which is dead for so many years.

Please uninstall this rpm and try again. We will remove this package from toolbox.

Originally posted by: Teej42

That was indeed the cause - python-xml-0.8.4-1.aix6.1.ppc.rpm was installed.  Once removed, everything worked.  Thank you.

How were you able to pinpoint this?

Originally posted by: AyappanP

The error message shows this file "/opt/freeware/lib64/python2.7/site-packages/_xmlplus/parsers/expat.py" which comes from python-xml rpm. 

This package comes with its own modules which is not compatible with recent python versions.

python_64 -v /opt/freeware/lib64/python2.7/site-packages/_xmlplus/parsers/expat.py

....

....

# trying /opt/freeware/lib64/python2.7/site-packages/_xmlplus/parsers/pyexpat.so
dlopen("/opt/freeware/lib64/python2.7/site-packages/_xmlplus/parsers/pyexpat.so", 2);
/opt/freeware/lib64/python2.7/site-packages/_xmlplus/parsers/expat.py:4: RuntimeWarning: Python C API version mismatch for module pyexpat: This Python has API version 1013, module pyexpat has version 2.
  from pyexpat import *
Segmentation fault(coredump)

# rpm -qf /opt/freeware/lib64/python2.7/site-packages/_xmlplus/parsers/pyexpat.so

python-xml-0.8.4-1.ppc