擅长:python、mysql、java
<p><a href="https://scikit-learn.org/stable/modules/generated/sklearn.model_selection.train_test_split.html" rel="noreferrer">scikit learn's ^{<cd1>}</a>是个不错的选择。</p>
<pre><code>from sklearn.model_selection import train_test_split
train, test = train_test_split(df, test_size=0.2)
</code></pre>