Extract word from texts

extract.py

import re
import difflib

word="acromegaly"
textarea = "acromegaly, pneumonia, prolactinoma"
pattern = r'\w+'
l = re.findall(pattern, textarea)

matcher = difflib.SequenceMatcher(b=word)
for test_word in l:
    matcher.set_seq1(test_word)
    distance = len([m for m in matcher.get_opcodes() if m[0]!='equal'])
    if distance <= 2:
        print(distance, test_word)