% tclsh
% package require csv

>>> import os
>>> print os.__file__
'/a/b/python2.2.1/linux26_x86_64/lib/python2.2/os.pyc'

% package require csv
0.7.2
% package ifneeded csv 0.7.2
package provide csv 0.7.2;source -encoding utf-8 {C:/Program Files/Tcl/lib/teapot/package/tcl/teapot/tcl8/8.3/csv-0.7.2.tm}

join $::auto_path n