擅长:python、mysql、java
<p>你已经做到了</p>
<pre><code>cat = cat + (str('W'+ (row['weeks'])) + ',')
</code></pre>
<p>应该是的</p>
<pre><code>cat = cat + ('W'+ str(row['weeks']) + ',')
</code></pre>
<p>如果你想列个单子,你可以这样做</p>
<pre><code>cat = ["W"+str(row['weeks']) for row in res]
</code></pre>