擅长:python、mysql、java
<p>您可以使用<code>re.sub</code>与正向查找相结合,以以下方式丢弃不需要的字符:</p>
<pre><code>import re
s1 = "12345SNET1"
s2 = "1234567SNETA2"
s3 = "123456SNET3"
out1 = re.sub(r"(?<=SNET)[A-Z]?\d", "", s1)
out2 = re.sub(r"(?<=SNET)[A-Z]?\d", "", s2)
out3 = re.sub(r"(?<=SNET)[A-Z]?\d", "", s3)
print(out1) # 12345SNET
print(out2) # 1234567SNET
print(out3) # 123456SNET
</code></pre>