擅长:python、mysql、java
<p>对于更基本的答案,不使用regex:</p>
<pre><code>>>> def remove_doublespace(string):
... if ' ' not in string:
... return string
... return remove_doublespace(string.replace(' ',' '))
...
>>> remove_doublespace('hi there how are you.i am fine. '.replace('.', '. '))
'hi there how are you. i am fine. '
</code></pre>