擅长:python、mysql、java
<p>你想要<a href="https://docs.python.org/2/library/time.html?highlight=sleep#time.sleep%20" rel="nofollow noreferrer">time.sleep</a>。你也可以使用</p>
<pre><code>from time import sleep
</code></pre>
<p>编辑:导入类范围内的问题已解释<a href="https://stackoverflow.com/a/6883558/5757280">here</a>。</p>