<p>有这样一个字符串:</p>
<pre><code><p>Millions of people watch TV.</p><br/>https://sites.google.com/aaa-net.bb.cc/be-do-have/%E3%83%9B%E3%83%BC%E3%83%A0<br/><p>Good boy!</p><br/>
</code></pre>
<p>我要删除内容:</p>
<pre><code>https://sites.google.com/aaa-net.bb.cc/be-do-have/%E3%83%9B%E3%83%BC%E3%83%A0
</code></pre>
<p>保持:</p>
<pre><code><p>Millions of people watch TV.</p><br/><br/><p>Good boy!</p><br/>
</code></pre>
<p>我的代码:</p>
<pre><code>mystring = '<p>Millions of people watch TV.</p><br/>https://sites.google.com/aaa-net.bb.cc/be-do-have/%E3%83%9B%E3%83%BC%E3%83%A0<br/><p>Good boy!</p><br/>'
</code></pre>
<p>怎么做?你知道吗</p>