擅长:python、mysql、java
<p>您可以使用方法<code>partition</code>和<code>replace</code>。工作代码如下:</p>
<pre><code>string = "SELECT sdfdsf SELECT sdrrr SELECT 5445ff"
parts = string.partition("SELECT") # returns a tuple
results = parts[0] + parts[1] + parts[2].replace("SELECT", "@@@SELECT")
print(results)
</code></pre>
<p>所以你会得到:</p>
<blockquote>
<p>SELECT sdfdsf @@@SELECT sdrrr @@@SELECT 5445ff</p>
</blockquote>
<p>如果<code>string = "Blabla is SELECT sdfdsf SELECT sdrrr SELECT 5445ff"</code>,您将得到:</p>
<blockquote>
<p>Blabla is SELECT sdfdsf @@@SELECT sdrrr @@@SELECT 5445ff</p>
</blockquote>