擅长:python、mysql、java
<p>给你:</p>
<pre><code>>>> import re
>>> ip_addr_regex = re.compile(r'\b(?:[0-9]{1,3}\.){3}[0-9]{1,3}\b')
>>> f = open('foo')
>>> for line in f:
... print(line)
...
10.153.193.0/24 via 10.153.213.1
>>> f.seek(0)
>>>
specific_substitute = 'foo'
>>> for line in f:
... re.sub(ip_addr_regex, specific_substitute, line)
...
'foo/24 via foo\n'
</code></pre>