<p>我有一个df，现在看起来像这样：</p>
<pre><code>Car Name Number
Adam Leaf 9
Adamm Leaf 9
Adam Lea NaN
Adam-Leaf NaN
Adam/Leaf 9
Claire-Green NaN
Cliare Green 3
Claire Green 3
Claire Gren NaN
Claire/Green 3
</code></pre>
<p>我正在尝试删除这些变体以实现类似的效果</p>
<pre><code>Car Name Number
Adam Leaf 9
Claire Green 3
</code></pre>
