In esale_joomla module in openerp 5,I change some code in that file for need to install in openerp 7 from wizard folder py files it is showing errors.

Please any one help me.

class wiz_export(osv.osv_memory):
    states = {
        'init': {
            'actions': [_export_setup],
            'result': {
                'type': 'form',
                'arch': _export_select_form,
                'fields': _export_select_fields,
                'state': [('export', 'Export', 'gtk-execute'), ('end', 'Cancel', 'gtk-cancel')],
            },
        },
        'export': {
            'actions': [_export_from_shop],
            'result': {
                'type': 'form',
                'arch': _export_done_form,
                'fields': _export_done_fields,
                'state': [('end', 'End')],
            },
        },
    }

wiz_export()