擅长:python、mysql、java
<p>是您了解<a href="http://docs.python.org/2/tutorial/datastructures.html#list-comprehensions" rel="nofollow">list comprehensions</a>的最佳时机:</p>
<pre><code>>>> def mypowerfunction(my_list, exponent=2):
... return [x ** exponent for x in my_list]
...
>>> mypowerfunction([2,4,3])
[4, 16, 9]
</code></pre>