I am trying to install openerp 7 on centos but when I run setup.py I get this error:

openerp ./setup.py: 
line 23: from: command not found ./setup.py: 
line 26: syntax error near unexpected token `(' ./setup.py: 
line 26: `def data():'

and when I run setup_rpm.py I get the followwing error:

running install
Checking .pth file support in usr/lib/python2.6/site-packages/
error: can't create or remove files in install directory

The following error occurred while trying to add or remove files in the
installation directory:

    [Errno 2] No such file or directory: 'usr/lib/python2.6/site-packages/test-easy-install-10137.pth'

The installation directory you specified (via --install-dir, --prefix, or
the distutils default setting) was:

    usr/lib/python2.6/site-packages/

This directory does not currently exist.  Please create it and try again, or
choose a different installation directory (using the -d or --install-dir
option).

sed: can't read INSTALLED_FILES: No such file or directory

I tried some options such as -d , --prefix, --install-dir to define the installation directory but it didn't work. why is that so? and what is the solution?