擅长:python、mysql、java
<p>您可以使用<a href="https://github.com/Suor/funcy" rel="nofollow">funcy</a>库中的<a href="http://funcy.readthedocs.org/en/latest/seqs.html#ipartition" rel="nofollow">ipartition</a>函数:</p>
<pre><code>from funcy import ipartition
with open('filename.txt','w') as f:
f.writelines('%s %d\n' % (label, num)
for label, num in ipartition(2, datacolumn))
</code></pre>