擅长:python、mysql、java
<p>使用<a href="https://docs.python.org/2/library/stdtypes.html#str.rsplit" rel="nofollow">^{<cd1>}</a>:</p>
<pre><code>In [100]: s = 'blah 45 blah 89'
In [101]: s1, n = s.rsplit(None, 1)
In [102]: s1, n
Out[102]: ('blah 45 blah', '89')
</code></pre>