About Radiomenuitem functions

To operate on a radio menuitem object and based on your requirement, you can use any of these functions

Radiomenuitem python API's

click - Click on a radio menu item

menuitemenabled - Verify whether the radio menu item is enabled

menucheck - Select the radio menu item

selectmenuitem - Select the radio menu item

verifymenucheck - Verify whether the radio menu item is selected

verifymenuuncheck - Verify whether the radio menu item is deselected