Can't find "six", but it's installed

Question

I have six installed (even reinstalled it).

$ pip show six
---
Name: six
Version: 1.7.3
Location: /usr/lib/python2.6/site-packages
Requires: 

But when I try to run csvcut, it can't find it.

$ csvcut -n monster.csv
Traceback (most recent call last):
  File "/usr/bin/csvcut", line 5, in <module>
    from pkg_resources import load_entry_point
  File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 2655, in <module>
    working_set.require(__requires__)
  File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 648, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 546, in resolve
    raise DistributionNotFound(req)
pkg_resources.DistributionNotFound: six>=1.6.1

Here's the relevant but of csvcut:

#!/usr/bin/python
# EASY-INSTALL-ENTRY-SCRIPT: 'csvkit==0.8.0','console_scripts','csvcut'
__requires__ = 'csvkit==0.8.0'
import sys
from pkg_resources import load_entry_point

if __name__ == '__main__':
    sys.exit(
        load_entry_point('csvkit==0.8.0', 'console_scripts', 'csvcut')()
    )

This is on CentOS.

Answer 1

Uninstalling and reinstalling six using pip didn't work

sudo pip uninstall six
sudo pip install six

However, I was able to solve the problem using easy_install:

easy_install --upgrade six

Answer 2

Reason for this is when you install Six using PIP the location of the Six library isnt added to Pythons Path so when trying to use the commands, python cant find them. Installing with Easy_Install doesn't have this problem, when it is installing six it automatically updates the python path variable so python can find the library.

Installing by Easy_Install as answered before resolves this but you can alternatively add the location to the python path variable.