Links for progbar

progbar-0.1.tar.gz
progbar-0.2.tar.gz
progbar-0.3.zip
http://docs.python.org/library/gc.html#gc.garbage
http://docs.python.org/library/gc.html#gc.garbage
http://docs.python.org/reference/datamodel.html#object.__del__
http://docs.python.org/reference/datamodel.html#object.__del__