在python中识别字符串中的某些单词短语

def find_words_phrases(string, target_words_phrases):
    words = string.split()
    result = []
    for word in words:
        if word in target_words_phrases:
            result.append(word)
    return result

import re

def find_words_phrases(string, target_words_phrases):
    pattern = r'\b(?:{})\b'.format('|'.join(target_words_phrases))
    result = re.findall(pattern, string)
    return result

import nltk

def find_words_phrases(string, target_words_phrases):
    words = nltk.word_tokenize(string)
    result = []
    for word in words:
        if word in target_words_phrases:
            result.append(word)
    return result