擅长:python、mysql、java
<p>使用<a href="https://docs.python.org/3/library/re.html#re.sub" rel="nofollow noreferrer">^{<cd1>}</a>:</p>
<pre><code>import re
counter = 0
def replacer(match):
global counter
counter += 1
return str(counter)
re.sub(r'hi', replacer, text)
</code></pre>
<p>这将比使用<code>str.replace</code>的任何替代方法都要快得多</p>