HELP! - Substitute a index value to another list value

[Fansim]

I need some help!
I have a LIST with 255 numeric elements like:

List 1:
0 - A
1 - B
2 - C
3 - C
4 - A
5 - A
6 - B

and a LIST where i have this numbers defined with 102 univocal elements like:

List 2:
0 - A
1 - B
2 - C

Now i must compare the two list for obtaining that same values have the same indexes of the second list with a result like:

List 3:

0 - 0
1 - 1
2 - 2
3 - 2
4 - 0
5 - 0
6 - 1

How can i do it with dynamo?

[Jonathan.Olesen]

Hi, and Welcome to the forum can you show what you have tried so far?

[Fansim]

Here You Are!

[Fansim]

Here there is the definition.

Enumerazione per Area_2.dyn (23.4 KB)

[GregX]

Something like this?
I thought I had to play around with list levels (the little arrow next to the inputs) but it worked on the first try

[ricardoperucci]

import clr
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *

list1 = IN[0]
list2 = IN[1]

listOut = []

for item in list1:

    for i, reference in enumerate(list2):
	
	    if item == reference:
		
		    listOut.Add(i)
		    break
OUT = listOut

Just use this python code!