擅长:python、mysql、java
<p>使用<a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.where.html" rel="nofollow noreferrer">^{<cd1>}</a>试试这个</p>
<pre><code>import numpy as np
errors = list(dfError['id'].unqiue())
dfMaster['Building_id'] = np.where(dfMaster['Building_id'].isin(errors),'DD',dfMaster['Building_id'])
</code></pre>