擅长:python、mysql、java
<p>如果您有一个<a href="https://docs.python.org/2/tutorial/inputoutput.html#reading-and-writing-files" rel="nofollow"><strong>file</strong></a><code>grades</code>:</p>
<pre><code>lines = grades.read().splitlines()
lines.sort(key=lambda line: int(line.split()[1]))
for line in lines:
print line
</code></pre>