How to match any string from a list of strings in regular expressions in python?

Question

Lets say I have a list of strings,

string_lst = [\'fun\', \'dum\', \'sun\', \'gum\']

I want to make a regular expression, where at a point

Answer 1

Except for the regular expression, you can use list comprehension, hope it's not off the topic.

import re
def match(input_string, string_list):
    words = re.findall(r'\w+', input_string)
    return [word for word in words if word in string_list]

>>> string_lst = ['fun', 'dum', 'sun', 'gum']
>>> match("I love to have fun.", string_lst)
['fun']