Python not able to find package but it is installed

[Mahmood Naderan]

Hello,
Although I have installed a package via pip on a centos-6.6, python interpreter still says there is no such package!

Please see the output below

$ python exread2.py input.xlsx tmp/output
Traceback (most recent call last):
File "/home/mahmood/excetest/exread2.py", line 1, in <module>
from openpyxl import load_workbook
ImportError: No module named openpyxl


$ pip install openpyxl
DEPRECATION: Python 2.6 is no longer supported by the Python core team, please upgrade your Python. A future version of pip will drop support for Python 2.6
Requirement already satisfied: openpyxl in /opt/rocks/lib/python2.6/site-packages

...


$ ls -l /opt/rocks/lib/python2.6/site-packages/openpyxl*
/opt/rocks/lib/python2.6/site-packages/openpyxl:
total 84
drwxr-xr-x 2 root root 4096 May 30 12:26 cell
drwxr-xr-x 2 root root 4096 May 30 12:26 chart
drwxr-xr-x 2 root root 4096 May 30 12:26 chartsheet
drwxr-xr-x 2 root root 4096 May 30 12:26 comments
drwxr-xr-x 2 root root 4096 May 30 12:26 compat
-rw-r--r-- 1 root root 1720 Mar 16 21:35 conftest.py
-rw-r--r-- 1 root root 2111 May 30 12:26 conftest.pyc
drwxr-xr-x 2 root root 4096 May 30 12:26 descriptors
drwxr-xr-x 2 root root 4096 May 30 12:26 drawing
drwxr-xr-x 2 root root 4096 May 30 12:26 formatting
drwxr-xr-x 2 root root 4096 May 30 12:26 formula
-rw-r--r-- 1 root root  880 Mar 16 21:35 __init__.py
-rw-r--r-- 1 root root 1009 May 30 12:26 __init__.pyc
drwxr-xr-x 2 root root 4096 May 30 12:26 packaging
drwxr-xr-x 2 root root 4096 May 30 12:26 reader
drwxr-xr-x 2 root root 4096 May 30 12:26 styles
drwxr-xr-x 2 root root 4096 May 30 12:26 utils
drwxr-xr-x 3 root root 4096 May 30 12:26 workbook
drwxr-xr-x 2 root root 4096 May 30 12:26 worksheet
drwxr-xr-x 2 root root 4096 May 30 12:26 writer
drwxr-xr-x 2 root root 4096 May 30 12:26 xml

/opt/rocks/lib/python2.6/site-packages/openpyxl-2.4.7-py2.6.egg-info:
total 36
-rw-r--r-- 1 root root     1 May 30 12:26 dependency_links.txt
-rw-r--r-- 1 root root 11193 May 30 12:26 installed-files.txt
-rw-r--r-- 1 root root  2381 May 30 12:26 PKG-INFO
-rw-r--r-- 1 root root    16 May 30 12:26 requires.txt
-rw-r--r-- 1 root root  5224 May 30 12:26 SOURCES.txt
-rw-r--r-- 1 root root     9 May 30 12:26 top_level.txt




Any idea to fix that?

Regards,
Mahmood