擅长:python、mysql、java
<p>试试这个:</p>
<pre><code>dfx['group'] = ""
dfx['group'] = np.where((dfx['Gender']=='Female')&(dfx['Age_type']=='Adult'),'A', dfx['group'])
dfx['group'] = np.where((dfx['Gender']=='Female')&(dfx['Age_type']=='Child'),'B', dfx['group'])
dfx['group'] = np.where((dfx['Gender']=='Male')&(dfx['Age_type']=='Adult'),'C', dfx['group'])
dfx['group'] = np.where((dfx['Gender']=='Male')&(dfx['Age_type']=='Child'),'D', dfx['group'])
</code></pre>