fuzzygroups.py

import re

data = [
'atr.i',
'atr i',
'ok',
'test',
'ro bn.',
'ro bn',
'talk 1',
'talk n'
]

clean = [re.sub('[ .,-]','',d) for d in data]
unique = list(set(clean))
for d,c in zip(data,clean):
    idx = unique.index(c)
    print( f"{d:10} {c:10} {idx:3}" )

# Output:
#
# atr.i      atri         5
# atr i      atri         5
# ok         ok           1
# test       test         4
# ro bn.     robn         2
# ro bn      robn         2
# talk 1     talk1        3
# talk n     talkn        0