Question

there are two strings:

   str1 = "black_red_yellow"

   str2 = "blue_red_green"

which python library can I use to check these two strings have a substring"_red_" in common? thank you in advance.

Answer 1

Something like this should work if you don’t know the actual string you’re searching for

import difflib

str1 = "black_red_yellow"
str2 = "blue_red_green"

difference = difflib.SequenceMatcher()

difference.set_seqs(str1, str2)

for match in difference.get_matching_blocks():
    print str1[match[0]:match[0] + match[2]]