Multiple List search/destroy/replace

Coding Python Support
#1

Hello, I’ve seen a couple of things on various posts scattered throughout the internet, but none that quite matches my needs.
I have 10 separate Global lists in my game. They are normally housing anywhere between 0-6 items
I am attempting to run a script that will move a given object to a new list, while removing it from any others.
Here is an example:

List1 = []
List2 = ["Blue"]
List3 = ["Yellow", "Orange", "Gold"]
List4 = ["Red"]
Listcomp = 
[List1, List2, List3, List4]
def Strip(item, lists, except):
    for sublist in lists:
        if sublist != except:
            for item in sublist:
                sublist.remove(item)
                if item not in except:
                    except.append(item)
Strip("Red", Listcomp, List1)

I realize that the way I have this set up I am asking python to look at “[]” instead of “List1” (as well as nesting the contents of the lists and not the list names) yet I don’t know how to do this without having to rewrite code 10 different times to exchange “except” with the searched list.

The goal would be to have a function that could pull “Red” out of every list except a single targeted list, and if it is not already in that list, add it.

#2

This is IMO the fastest way (it creates new lists, but is faster than in-place stripping):

def remove_all_add(lists, list, value):
    for l in lists:
        l = [e for e in l if e != value]
    list.append(value)

# list definition

lists = (list1, list2, list3, list4)

remove_all_add(lists, list1, "Red")

But it removes all occurrences of “Red” from list1 as well, but adds it back (1x)

If you wanna keep all occurrences of “Red” in that list, you could do:

def remove_all_add(lists, list, value):
    for l in lists:
        if l is list:
            continue
        l = [e for e in l if e != value]

    if value not in list:
        list.append(value)

# list definition

lists = (list1, list2, list3, list4)

remove_all_add(lists, list1, "Red")

if you don’t want to have a new list created, you can use

l[:] = (e for e in l if e != value)

if all duplicates in lists can be removed, it’s faster to use:

l = list(set(l))
#3

Removal is fine, as long as it is replaced in the same line… Thank you for the reply.