擅长:python、mysql、java
<p>python<code>str.find()</code>方法实现了这一点。举个例子:</p>
<pre><code>a = "QH AAPL|5M|20190101093000|20190208170000|12347:M01/02/2019|F04:00:00|H154.4|L153.01|O154.4|T154|V3257"
print(a[a.find(":M") + 1:]) # -> M01/02/2019|F04:00:00|H154.4|L153.01|O154.4|T154|V3257
</code></pre>
<p><strong>编辑</p>
<p>如果您真的想用regex来实现,请看下面的示例:</p>
<pre><code>import re
a = "QH AAPL|5M|20190101093000|20190208170000|12347:M01/02/2019|F04:00:00|H154.4|L153.01|O154.4|T154|V3257"
print(a[re.search(":M", a).start() + 1:]) # -> M01/02/2019|F04:00:00|H154.4|L153.01|O154.4|T154|V3257
</code></pre>