擅长:python、mysql、java
<p>IIUC,试试这个</p>
<pre><code>df['log']= np.where((df.Remark.isnull()) & (df.Remark.isnull()),df.Particulars,'')
df
</code></pre>
<p><strong>输入</p>
<pre><code>Particulars Remark Details AMT
0 AAPOP None None NaN
1 QP av daf 7.0
2 WP ad dae 8.0
3 ST df dds 9.0
4 AB None None NaN
5 RR dasd df 6.0
6 RA dsf we 8.0
7 QDA98 None None NaN
8 DRS sd df 5.0
9 DRW sd dsa 3.0
10 UTS dad fds 6.0
</code></pre>
<p><strong>输出</strong></p>
<pre><code>Particulars Remark Details AMT log
0 AAPOP None None NaN AAPOP
1 QP av daf 7.0
2 WP ad dae 8.0
3 ST df dds 9.0
4 AB None None NaN AB
5 RR dasd df 6.0
6 RA dsf we 8.0
7 QDA98 None None NaN QDA98
8 DRS sd df 5.0
9 DRW sd dsa 3.0
10 UTS dad fds 6.0
</code></pre>