擅长:python、mysql、java
<p>您可以通过以下两种方式对此进行归档</p>
<p>方式1:使用字符串替换功能替换第一次出现的字符串</p>
<pre><code>s = 'alpha-catenin inhibits beta-catenin signaling by preventing formation of a beta-catenin*T-cell factor*DNA complex.'
s.replace("beta-catenin", "PROTEIN", 1)
print(s)
</code></pre>
<p>输出:</p>
<pre><code>alpha-catenin inhibits PROTEIN signaling by preventing formation of a beta-catenin*T-cell factor*DNA complex.
</code></pre>
<p>方法2:使用python的正则表达式</p>
<pre><code>import re
s = 'alpha-catenin inhibits beta-catenin signaling by preventing formation of a beta-catenin*T-cell factor*DNA complex.'
s = re.sub("beta-catenin", "PROTEIN", s, 1)
print(s)
</code></pre>
<p>输出:</p>
<pre><code>alpha-catenin inhibits PROTEIN signaling by preventing formation of a beta-catenin*T-cell factor*DNA complex.
</code></pre>