擅长:python、mysql、java
<p>可以使用遮罩条件更新数据帧</p>
<pre><code>portfoy.loc[portfoy.PRODUCT_CODE.isin([3,5,8]),'PRODUCT_TYPE'] = 'old'
portfoy.loc[~portfoy.PRODUCT_CODE.isin([3,5,8]),'PRODUCT_TYPE'] = 'new'
</code></pre>
<p>portfoy.PRODUCT_CODE.isin([3,5,8]是掩码<br/>
~是对面具的否定</p>