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導入模塊：

from pandas import DataFrameimport pandas as pdimport numpy as np

生成DataFrame數(shù)據(jù)

df = DataFrame(np.random.randn(4, 5), columns=['A', 'B', 'C', 'D', 'E'])

DataFrame數(shù)據(jù)預覽：

          A         B         C         D         E0  0.673092  0.230338 -0.171681  0.312303 -0.1848131 -0.504482 -0.344286 -0.050845 -0.811277 -0.2981812  0.542788  0.207708  0.651379 -0.656214  0.5075953 -0.249410  0.131549 -2.198480 -0.437407  1.628228

計算各列數(shù)據(jù)總和并作為新列添加到末尾

df['Col_sum'] = df.apply(lambda x: x.sum(), axis=1)

計算各行數(shù)據(jù)總和并作為新行添加到末尾

df.loc['Row_sum'] = df.apply(lambda x: x.sum())

最終數(shù)據(jù)結果：

                A         B         C         D         E   Col_sum0        0.673092  0.230338 -0.171681  0.312303 -0.184813  0.8592381       -0.504482 -0.344286 -0.050845 -0.811277 -0.298181 -2.0090712        0.542788  0.207708  0.651379 -0.656214  0.507595  1.2532563       -0.249410  0.131549 -2.198480 -0.437407  1.628228 -1.125520Row_sum  0.461987  0.225310 -1.769627 -1.592595  1.652828 -1.022097