擅长:python、mysql、java
<p>通过使用<strong>正则表达式</strong></p>
<pre><code>import re
s = """random string
this is 34 the string 3 that, i need 234
random string
random string
random string
"""
re.findall('this is (\d+) the string (\d+) that, i need (\d+)', s)
</code></pre>