我有这个 html 代码(长 html 代码的一部分):
<div class="yt-lockup-content">
<h3 class="yt-lockup-ellipsize">
<a class="yt-uix-contextlink yt-uix-sessionlink yt-uix-tile-link result-item-translation-title"dir="ltr"title="Rihanna ft. Calvin Harris - We Found Love LYRICS"data-sessionlink="ved=CAoQvxs%3D&ei=CPLZjMDLwbICFUag3wod7Dm-pw%3D%3D"href="***/watch?v=1KzEu5hWmRY***">Rihanna ft. Calvin Harris - We Found Love LYRICS</a></h3><p class="description " dir="ltr">
<b>bla</b> ft. Calvin Harris -
<b>bla</b>
bla bla
<b>bla bla bla</b>
<b>...</b>
</p><div class="yt-lockup-meta">
<ul class="single-line-lego-list">
<li> <a href="/results?search_type=videos&search_query=rihanna+we+found+love&high_definition=1" class="yt-badge-std">HD
</a>
</h3>
我想得到这个文本:href=/watch?v=1KzEu5hWmRY(粗体文本)。我知道如何获得所有线路,但我怎样才能抓住这个文本?谢谢,或者。