擅长:python、mysql、java
<p>我建议去掉你不想要的尾随内容,留下你想要的:</p>
<pre><code>inp = "GN1RLWFH0546-2020-04-10-18-09-52-563945.txt"
out = re.sub(r'-\d{4}-\d{2}-\d{2}.*$', '', inp)
print(out)
</code></pre>
<p>这张照片是:</p>
<pre><code>GN1RLWFH0546
</code></pre>
<p>请参阅下面的regex演示</p>
<p><a href="https://regex101.com/r/xUvx36/1" rel="nofollow noreferrer"><h2>Demo</h2></a></p>