擅长:python、mysql、java
<p>您可以设置计数:</p>
<pre><code>In [1]: from dateutil import rrule
In [2]: from datetime import datetime, timedelta
In [3]: st = datetime(2016, 7, 5, 23, 30)
In [4]: rule = rrule.rrule(rrule.HOURLY, st, count=4)
In [5]: print(list(rule))
[datetime.datetime(2016, 7, 5, 23, 30), datetime.datetime(2016, 7, 6, 0, 30), datetime.datetime(2016, 7, 6, 1, 30), datetime.datetime(2016, 7, 6, 2, 30)]
</code></pre>
<p>或者使用<em>timedelta</em>将三个小时添加到开始时间:</p>
^{pr2}$