擅长:python、mysql、java
<p>您可以执行以下操作以获得反向切片:</p>
<pre><code>searchlines[i-1:i-5:-1]
</code></pre>
<p>例如:</p>
^{pr2}$
<p>您也可以按相反的顺序迭代索引,而不是切片:</p>
<pre><code>for j in xrange(i - 1, i - 5, -1):
l = searchlines[j]
# see if the line is what you want
</code></pre>