擅长:python、mysql、java
<p>您的<code>return</code>语句当前缩进错误。当我纠正它似乎有效。在</p>
<p>更简单的方法可能是</p>
<pre><code>def read_file(filename):
infile = open(filename, "r") # reads file
rows = [line.split() for line in infile]
return [r[i] for r in rows for i in range(3)] # return lists
</code></pre>