python dataframe 如何去除缺失ŀ答:1、导入需要的库。import pandas as pd,import numpy as np,from sklearn.preprocessing import Imputer。2、生成缺失数据。data=pd.DataFrame({'name':['Kite','Lily','Hanmei','Danny','Bob'],'English':[92,78,np.nan,23,82],'Math':[69,87,91,np.nan,90],'Chinese':[np.nan,...