擅长:python、mysql、java
<p>最好对返回当前日期/时间的函数进行一次调用:</p>
<pre><code>from datetime import datetime
now = datetime.now()
seconds_since_midnight = (now - now.replace(hour=0, minute=0, second=0, microsecond=0)).total_seconds()
</code></pre>
<p>或者</p>
<pre><code>datetime.now() - datetime.now()
</code></pre>
<p>这里有人要回零时间增量吗?</p>