擅长:python、mysql、java
<p>使用<a href="https://docs.python.org/2/tutorial/datastructures.html#list-comprehensions" rel="nofollow">list comprehension</a>生成新列表:</p>
<pre><code>samples = [1 if i in (1, 2, 3) else i for i in samples]
</code></pre>
<p>它使用<a href="https://docs.python.org/2/reference/expressions.html#conditional-expressions" rel="nofollow">conditional expression</a>在<code>1</code>或原始值之间进行选择。在</p>