擅长:python、mysql、java
<p>您可以将列表本身作为函数的<code>return</code>输出:</p>
<pre><code>def calculate_TP(df):
countTP = len(df[(df['y']==1) & (df['x']==1)])
countFP = len(df[(df['y']==0) & (df['x']==1)])
countFN = len(df[(df['y']==1) & (df['x']==0)])
countTN = len(df[(df['y']==0) & (df['x']==0)])
conf_lst = [countTP,countFP,countFN,countTN]
return conf_lst
</code></pre>