Python: re..find longest sequence

Question

I have a string that is randomly generated:

polymer_str = \"diol diNCO diamine diNCO diamine diNCO diamine diNCO diol diNCO diamine\"

I\'d

Answer 1

Using re:

 m = re.search(r"(\bdiNCO diamine\b\s?)+", polymer_str)
 len(m.group(0)) / len("bdiNCO diamine")