检查列表中是否存在值

Question

I have a list: object = [x, y, type, name]

I want to add it to an array, if it's not already added:

if not object in world[int(room)]:
   world[int(room)].append(object)

This worked very nice without the x and y coordinates.

What I want to do is to now compare the lists without x and y. Just by type and name.

Something like if not object[2:] in world[room][2:]

Answer 1

Create a generator of lists made from the elements from index 2 onwards for each item in the world[int(room)] list:

if not object[2:] in (i[2:] for i in world[int(room)]):
   world[int(room)].append(object)

---

Nb you should also not use object as it is an identifier that refers to a built-in type, so by using it as a variable name, you are overriding it.