擅长:python、mysql、java
<p>你只回最后一个干净的字!在</p>
<p>应该是:</p>
<pre><code>def clean_sentence(s):
lst = [word for word in s.split()]
lst_cleaned = []
for items in lst:
lst_cleaned.append(remove_unw2anted(items))
return ' '.join(lst_cleaned)
</code></pre>
<p>一种较短的方法是:</p>
^{pr2}$