擅长:python、mysql、java
<p>可以将列标签分为两部分:偶数列和奇数列。然后,在每对奇偶编号的列中交换它们的序列,如下所示:</p>
<pre><code>swapped_cols = np.ravel([[y, x] for x, y in zip(df.columns[0::2], df.columns[1::2])])
</code></pre>
<p>这里,<code>df.columns[0::2]</code>和<code>df.columns[1::2]</code>包含偶数列和奇数列</p>
<pre><code>print(swapped_cols)
['Unnamed:1' 'sample 1' 'Unnamed:2' 'sample 2']
</code></pre>
<p><strong>案例1:</strong>如果只想交换列标签,而不交换列内容,可以执行以下操作:</p>
<pre><code>df.columns = swapped_cols
</code></pre>
<p><strong>结果</strong>:</p>
<pre><code>print(df)
Unnamed:1 sample 1 Unnamed:2 sample 2
0 wavelengths transmission 1 wavelengths transmission 2
</code></pre>
<p><strong>案例2:</strong>如果要交换列序列(同时交换列标签和列内容),可以执行以下操作:</p>
<pre><code>df = df[swapped_cols]
</code></pre>
<p><strong>结果</strong>:</p>
<pre><code>print(df)
Unnamed:1 sample 1 Unnamed:2 sample 2
0 transmission 1 wavelengths transmission 2 wavelengths
</code></pre>