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<p>我计算了一个频率数据帧。但是,我需要重命名第一列(没有名称,如下所示)</p>
<pre><code> Frequency
Trump won election 46
US working vaccine 45
seqirus coronavirus vitamine 45
... ...
Apple closed shops 1
still water helps 1
</code></pre>
<p>创建人</p>
<pre><code>freq = sum(sparse_matrix).toarray()[0]
df=pd.DataFrame(freq, index=word_vectorizer.get_feature_names(), columns=['Frequency'])
df=df.sort_values(by='Frequency', ascending=False)
</code></pre>
<p>我试过了</p>
<pre><code>df = df.rename(columns={'index':'Words'})
</code></pre>
<p>但一切都没有改变。我的预期产出是:</p>
<pre><code>Words Frequency
Trump won election 46
US working vaccine 45
seqirus coronavirus vitamine 45
... ...
Apple closed shops 1
still water helps 1
</code></pre>
<p>任何帮助都将不胜感激。多谢各位</p>