Python: Rename duplicates in list with progressive numbers without sorting list

Question

Given a list like this:

mylist = [\"name\", \"state\", \"name\", \"city\", \"name\", \"zip\", \"zip\"]

I would like to rename the duplicate

Answer 1

A list comprehension version of the Rick Teachey answer, "two-liner":

from collections import Counter

m = ["name", "state", "name", "city", "name", "zip", "zip"]

d = {a:list(range(1, b+1)) if b>1 else '' for a,b in Counter(m).items()}
[i+str(d[i].pop(0)) if len(d[i]) else i for i in m]
#['name1', 'state', 'name2', 'city', 'name3', 'zip1', 'zip2']