<p>我能表演</p>
<pre><code>a = [1,2,3]
b = [4,5,6]
a.extend(b)
# a is now [1,2,3,4,5,6]
</code></pre>
<p>是否有方法执行扩展列表并将新项添加到列表开头的操作?</p>
<p>像这样</p>
<pre><code>a = [1,2,3]
b = [4,5,6]
a.someaction(b)
# a is now [4,5,6,1,2,3]
</code></pre>
<p>如果重要的话,我使用2.7.5版。</p>