擅长:python、mysql、java
<p>对特定的regex模式使用以下方法:</p>
<pre><code>user_url = '/user/username/videos?view=60'
channel_url = '/channel/channelname/videos?view=60'
pattern = re.compile(r'(/user/|/channel/)([^/]+)')
m = re.match(pattern, user_url)
print(m.group()) # /user/username
m = re.match(pattern, channel_url)
print(m.group()) # /channel/channelname
</code></pre>