Can't find List.Contains node and don't know why

Packages
1

I can’t find List.Contains node and don’t know why. I thought it was part of spring nodes but is not there. Any idea what package am I missing?

I tried the OOTB node but it does not do the same. I’m trying to see if items of list 1 exist in list 2.

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2

try copy pasta this in a python node.

import clr
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *
#The inputs to this node will be stored as a list in the IN variables.

OGList= IN[0]
ListCompare = IN[1]
Output = []
missedtemp = []
missed = []

for Item in OGList:
	for ItemCompare in ListCompare:

		if Item == ItemCompare:
			Output.append(True)
		elif Item != ItemCompare:
			missedtemp.append(False)

	if len(missedtemp) == len(ListCompare):
		Output.append(False)

	missedtemp.Clear()
    
#Assign your output to the OUT variable.
OUT = Output
3

Also i think the package you’re looking for is called Ampersand