擅长:python、mysql、java
<p>使用<code>re.sub(pattern, repl, string, count=0, flags=0)</code>的第四个参数<code>count</code>,如下所示:</p>
<pre><code>text= 'H. Gerhardstraat 77 1502 CC 77 1502 CC Zaandam'
pattern = r'(\d{0,4}\s\d{4}\s[A-Za-z]{2}\s+)'
count = len(re.findall(pattern, text))
if count > 1:
text = re.sub(pattern, '', text, count -1)
</code></pre>