擅长:python、mysql、java
<p>阅读<a href="https://docs.python.org/2/reference/simple_stmts.html#return" rel="nofollow">^{<cd1>} statement</a>:</p>
<blockquote>
<p><code>return</code> <strong>leaves</strong> the <em>current</em> function call with the expression list (or
None) as return value.</p>
</blockquote>
<p>当您这样做时:</p>
<pre><code>while search.find(target, count) != -1:
return search.find(target, count)
</code></pre>
<p><code>return</code>返回结果并终止函数<code>find_last</code>的执行。你知道吗</p>
<p>把它取下来你就没事了。别忘了在循环之后<code>return count</code>。你知道吗</p>