擅长:python、mysql、java
<p>无需使用apply,请改用<a href="https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.Series.where.html" rel="nofollow noreferrer">pd.Series.where</a>:</p>
<pre><code>df['Production_loss'] = df['Production_potential'].where(df['No_employee?'].eq(1), df['Production_potential'] * df['No_machinery?'])
</code></pre>
<p>您还可以使用乘法:</p>
<pre><code>df['Production_loss'] = ~(df['No_employee?'] * df['No_machinery?']) * df['Production_potential']
</code></pre>