擅长:python、mysql、java
<p>我想您需要指定输入的轴,然后对它返回的数组进行转置:</p>
<pre><code>import pandas as pd
import numpy as np
df=pd.DataFrame([["XXL", 8, "black", "class 1", 22],
["L", np.nan, "gray", "class 2", 20],
["XL", 10, "blue", "class 2", 19],
["M", np.nan, "orange", "class 1", 17],
["M", 11, "green", "class 3", np.nan],
["M", 7, "red", "class 1", 22]])
df.columns=["size", "price", "color", "class", "boh"]
from sklearn.preprocessing import Imputer
imp=Imputer(missing_values="NaN", strategy="mean",axis=1 ) #specify axis
q = imp.fit_transform(df["price"]).T #perform a transpose operation
df["price"]=q
print df
</code></pre>