擅长:python、mysql、java
<p>在这种情况下,我建议使用<code>np.where()</code>。请参见以下示例:</p>
<pre><code>import pandas as pd
import numpy as np
df = pd.DataFrame({'x': [1,2,4,2,3,1,2,3,4,0], 'y': [0,1,2,0,0,2,4,0,1,2]})
df['3 Pointer'] = np.where(df['x']+df['y']==3, 1, 0)
</code></pre>
<p>产量:</p>
^{pr2}$