擅长:python、mysql、java
<p>这个:</p>
<pre><code>a = [b.pop() if item == ' ' else item for item in a]
</code></pre>
<p>让你:</p>
^{pr2}$
<p>看看<a href="http://docs.python.org/tutorial/datastructures.html#list-comprehensions" rel="nofollow">Python list comprehensions</a></p>