擅长:python、mysql、java
<p>您得到的是<code>ValueError</code>,因为您没有调用<code>crimes1.items()</code>,这是遍历字典的键、值对所必需的。简单地说,使用:</p>
<pre><code>for i, x in crimes1.items():
crimes2 = crimes2.append({'Neighborhood': i, 'Count': x}, ignore_index=True)
</code></pre>
<p>结果:</p>
<pre><code># print(crimes2)
Neighborhood Count
0 SOUTHERN 28445
1 NORTHERN 20100
2 MISSION 19503
</code></pre>