Python Count the number of substring in list from other string list without duplicates

Question

I have two list:

main_list = [\'Smith\', \'Smith\', \'Roger\', \'Roger-Smith\', \'42\']
master_list = [\'Smith\', \'Roger\']

I want to coun

Answer 1

If your master_list is not expected to be huge, one way to do it is with regex:

import re

def string_detection(master_list, main_list):
    count = 0
    master = re.compile("|".join(master_list))
    for entry in main_list:
        if master.search(entry):
            count += 1
    return count