Cannot import mpi4py after installing mpi4py-openmpi with yum.

Issue

• Unable to import mpi4py inspite of installing mpi4py-openmpi with yum

> python
Python 2.7.5 (default, Feb 11 2014, 07:46:25) 
[GCC 4.8.2 20140120 (Red Hat 4.8.2-13)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.path
['', '/usr/lib64/python27.zip', '/usr/lib64/python2.7', '/usr/lib64/python2.7/plat-linux2', '/usr/lib64/python2.7/lib-tk', '/usr/lib64/python2.7/lib-old', '/usr/lib64/python2.7/lib-dynload', '/usr/lib64/python2.7/site-packages', '/usr/lib64/python2.7/site-packages/gtk-2.0', '/usr/lib/python2.7/site-packages']
>>> import mpi4py
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named mpi4py
>>> sys.path.append('/usr/lib64/python2.7/site-packages/openmpi')
>>> import mpi4py
>>>