擅长:python、mysql、java
<p>您试图连接字符串和整数,这是不正确的。</p>
<p>将<code>print(numlist.pop(2)+" has been removed")</code>更改为以下任何选项:</p>
<p>显式<code>int</code>到<code>str</code>转换:</p>
<pre><code>print(str(numlist.pop(2)) + " has been removed")
</code></pre>
<p>使用<code>,</code>而不是<code>+</code>:</p>
<pre><code>print(numlist.pop(2), "has been removed")
</code></pre>
<p>字符串格式:</p>
<pre><code>print("{} has been removed".format(numlist.pop(2)))
</code></pre>