擅长:python、mysql、java
<p>使用<a href="http://docs.python.org/2/reference/expressions.html#list-displays">list comprehension</a>:</p>
<pre><code>['hello{0}'.format(i) for i in a]
</code></pre>
<p>列表理解允许您将表达式应用于序列中的每个元素。</p>
<p>演示:</p>
<pre><code>>>> a = [1,2,3,4]
>>> ['hello{0}'.format(i) for i in a]
['hello1', 'hello2', 'hello3', 'hello4']
</code></pre>