擅长:python、mysql、java
<p>你可以看看python re<a href="http://docs.python.org/2/library/re.html" rel="nofollow">http://docs.python.org/2/library/re.html</a></p>
<pre><code>>>> import re
>>> thing = "hi my name is placeholder"
>>> thing = re.sub("placeholder", "Fred", thing)
>>> thing
"hi my name is Fred"
</code></pre>