Keep your cats inside Sheryl until you are sure its gone.
We have never had a python in our walled area but last week we did have another (this time a small cobra) inside one of our two cat enclosures, wife thinks he climbed up a banana tree next to the wall and came in through an air brick, the girl cat climbed up out if harms way on one of the cat shelves while the male cat showed us where the snake was hiding.
My wife is good with snakes and netted it then heaved it over the wall.
Picture is not this one but a previous one and shows how she deals with them.
Yes it's a heinous crime to put electric into an E Type, my friend in England has two E Types and an S type all fully restored and covered over with dust sheets, he re built the engines himself with loving care and to replace them with electric would seriously do his head in.
Watched it all the way a couple of weeks back, very gritty and dark, similar to Nordic Noir genre crime movies, I felt a lot of the scenes were held by the camera for too long, for effect I suppose.