You should be able to go the local hardware store and get one for outdoor to indoor use. Just tell them you need a converter for an outdoor tap. My inside and outside faucets are the same size so I am not sure what size yours is. I would guess "E" IMO.
I agree, go to LHS (local hardware store). Bring the end of the python that you want to connect to and match that up. The outside faucet connection should be standard hose connection.