Each REPL python shell behave differently depending on the exit method.
Force a rollback at the end to avoid inconsitent behavior.
Thanks to Harry Jollenbeck for the report: https://www.odoo.com/groups/59/26318707
and move it under the setup package. Since the rename of the
openerp directory into odoo, having a script named "odoo.py"
conflicts with a package named "odoo".