Regex lookahead
# Can use a regex,so this Lookahead and Lookbehind ' to see that's there a word character on each end.
import re
import json
s = "[[('name', 'productname_0'), ('type', 'html'),('content', 'O'Cornor')],[('name', 'productname_1'), ('type', 'html'), ('content', 'Philp's')]]"
result = re.sub(r"(?<=w)'(?=w)", r"\'", s)
print(result)
d = json.dumps(result)
print(json.loads(d))