Extract Words from a file

Question

I open a file using python to find whether a predefined set of words are present in the opened file or not. I took the predefined set of words in a list and opened the file

Answer 1

import re

def get_words_from_string(s):
    return set(re.findall(re.compile('\w+'), s.lower()))

def get_words_from_file(fname):
    with open(fname, 'rb') as inf:
        return get_words_from_string(inf.read())

def all_words(needle, haystack):
    return set(needle).issubset(set(haystack))

def any_words(needle, haystack):
    return set(needle).intersection(set(haystack))

search_words = get_words_from_string("This is my test")
find_in = get_words_from_string("If this were my test, I is passing")

print any_words(search_words, find_in)

print all_words(search_words, find_in)

returns

set(['this', 'test', 'is', 'my'])
True