擅长:python、mysql、java
<p>考虑使用<a href="http://docs.python.org/2/library/difflib.html" rel="nofollow">difflib</a></p>
<pre><code>import difflib
d = difflib.Differ()
fa = open('a.txt'); fb = open('b.txt')
diff = d.compare("".join(fa.readlines()), "".join(fb.readlines()))
print ''.join(list(diff))
fa.close(); fb.close()
</code></pre>