擅长:python、mysql、java
<p>为了避免将整个文件加载到内存中,可以使用<a href="http://docs.python.org/2/library/itertools.html#itertools.islice">itertools.islice</a></p>
<pre><code>from itertools import islice
with open ('data.csv','r') as infile:
x = islice(infile, 2, None, 3)
for line in x:
print line
</code></pre>