在Python 3.6、1.1.2上
我在努力做中间价。我当然可以使用总和(水平),但这不是优雅的,也不是最优的,我想知道是否有更好的方法。 例如:
df = pd.DataFrame.from_dict({'level_0': {0: 'a', 1: 'a', 2: 'a', 3: 'b', 4: 'b', 5: 'b', 6: 'b', 7: 'b', 8: 'c', 9: 'c', 10: 'c', 11: 'c', 12: 'c', 13: 'c', 14: 'c', 15: 'c'}, 'level_1': {0: 'aa', 1: 'aa', 2: 'bb', 3: 'aa', 4: 'aa', 5: 'aa', 6: 'cc', 7: 'cc', 8: 'bb', 9: 'bb', 10: 'cc', 11: 'cc', 12: 'cc', 13: 'dd', 14: 'dd', 15: 'dd'}, 'level_2': {0: 'aaa', 1: 'aab', 2: 'bba', 3: 'aaa', 4: 'aab', 5: 'aac', 6: 'cca', 7: 'ccb', 8: 'bba', 9: 'bbb', 10: 'cca', 11: 'ccb', 12: 'ccc', 13: 'dda', 14: 'ddb', 15: 'ddc'}, 'value': {0: 5, 1: 2, 2: 3, 3: 5, 4: 9, 5: 2, 6: 2, 7: 9, 8: 1, 9: 9, 10: 9, 11: 5, 12: 5, 13: 5, 14: 5, 15: 3}}).groupby(by=['level_0', 'level_1', 'level_2']).sum()
给我:
value
level_0 level_1 level_2
a aa aaa 5
aab 2
bb bba 3
b aa aaa 5
aab 9
aac 2
cc cca 2
ccb 9
c bb bba 1
bbb 9
cc cca 9
ccb 5
ccc 5
dd dda 5
ddb 5
ddc 3
给你:
输出:
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