擅长:python、mysql、java
<p>lookbehind不能有无限长的匹配。您必须在<code>my</code>之后匹配整个内容并提取子组:</p>
<pre><code>my\s*([^ -.]+)
</code></pre>
<p><img src="https://www.debuggex.com/i/u29mXaln2pRFoICc.png" alt="Regular expression visualization"/></p>
<p><a href="https://www.debuggex.com/r/u29mXaln2pRFoICc" rel="nofollow">Debuggex Demo</a></p>