擅长:python、mysql、java
<p>试试熊猫<code>where</code>:</p>
<pre><code>mre_df.assign(rle_ctr = mre_df.ctr.where(mre_df.index<="2021-05-02",
mre_df.ctr*1.2)
)
click imps ctr rle_ctr
dates
2021-05-01 3 123 0.024390 0.024390
2021-05-02 2 122 0.016393 0.016393
2021-05-03 3 444 0.006757 0.008108
2021-05-04 4 443 0.009029 0.010835
</code></pre>