擅长:python、mysql、java
<p>你的空间放错地方了。在</p>
<pre><code># yours / fixed
r'(\d+(?:.\d+)?(?: [\+\-\/\*\^]\d+(?:.\d+) )* )'
r'(\d+(?:.\d+)?(?: [\+\-\/\*\^] \d+(?:.\d+) )*)'
</code></pre>
<p>你可以在<a href="http://pythex.org/" rel="nofollow">pythex.org</a>试试</p>