python - 检查一个字符串是否包含一组字符串的任何项目？

Question

我有一个文本文件，每行都有一个句子。我有一个单词表。我只想从列表中获取至少包含一个单词的句子。有没有一种pythonic方法可以做到这一点？

Answer 1

sentences = [line for line in f if any(word in line for word in word_list)]

Here f would be your file object, for example you could replace it with open('file.txt') if file.txt was the name of your file and it was located in the same directory as the script.

Answer 2

使用set.intersection：

with open('file') as f:
    [line for line in f if set(line.lower().split()).itersection(word_set)]

或与filter：

filter(lambda x:word_set.intersection(set(x.lower().split())),f)

Answer 3

this will give you a start:

words = ['a', 'and', 'foo']
infile = open('myfile.txt', 'r')
match_sentences = []

for line in infile.readlines():
    # check for words in this line
    # if match, append to match_sentences list