擅长:python、mysql、java
<p>你可以试试这个</p>
<pre><code>txt = " ECONOMYNEXT -Sri Lanka rupee closed steady at 176.40/50 rupees to the US
dollar on Friday and gilt yields edged higher on profit taking in the
secondary market even as the Central Bank cut policy rates to revive credit
demand, while stocks ended 0.26 percent lower, market participants said. The
rupee ended at 176.40/50 rupees against the greenback in the spot market on
Thursday. "
sentence_index = txt.find('. ')
print(txt[0: sentence_index])
</code></pre>
<p>您将得到如下输出</p>
<blockquote>
<p>ECONOMYNEXT -Sri Lanka rupee closed steady at 176.40/50 rupees to the US dollar on Friday and gilt yields edged higher on profit taking in the secondary market even as the Central Bank cut policy rates to revive credit demand, while stocks ended 0.26 percent lower, market participants said</p>
</blockquote>