擅长:python、mysql、java
<p>你可以用<a href="https://docs.scipy.org/doc/numpy-1.15.0/reference/generated/numpy.where.html" rel="nofollow noreferrer">numpy.where</a>。你知道吗</p>
<pre><code>import numpy as np
df['Vorbage']=np.where(df['Grad']!=0, df['OptOpTemp'], np.nan)
df['Temp']=np.where(df['Grad']!=0, df['OpTemp'], np.nan)
</code></pre>