擅长:python、mysql、java
<p>你可能想这样做。你知道吗</p>
<pre><code>import sklearn.preprocessing as preprocessing
df=pd.DataFrame({'id':[50,60,70,80],'A':[1,2,3,4],'B':[5,6,7,8]})
float_array = df['B'].values.astype(float).reshape(-1,1)
min_max_scaler = preprocessing.MinMaxScaler()
scaled_array = min_max_scaler.fit_transform(float_array)
df['B']=scaled_array
</code></pre>