擅长:python、mysql、java
<p>文件按<em>行</em>迭代,而不是按<em>字</em>迭代。你得分词:</p>
<pre><code>>>> with open('fileA.txt') as a, open('fileB.txt') as b:
... a_words = set(a.read().split())
... b_words = set(b.read().split())
... print('\n'.join(a_words & b_words))
...
hello
how
</code></pre>