擅长:python、mysql、java
<p>让我们使用列筛选并重新分配回df1:</p>
<pre><code>df1 = pd.DataFrame(np.random.randint(10,99, size=(13, 26)), columns =list('abcdefghijklmnopqrstuvwxyz'))
columns_to_keep = ["e", "r", "u"]
df1 = df1[columns_to_keep]
df1.head()
</code></pre>
<p>输出:</p>
<pre><code> e r u
0 65 95 13
1 58 42 75
2 95 34 12
3 43 20 79
4 83 27 47
</code></pre>