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.
dataEnteringNode = IN

people = ["joe","jim","mike","tony","jim","jim"]

dudes = []
outtage = []
done = []
unique_names = []


for person in people:
    new_name = person
    counter = 1
    while new_name in unique_names:
        counter += 1
        new_name = new_name + " " + str(counter)
    unique_names.append(new_name)

#Assign your output to the OUT variable.

OUT =  unique_names