Question

我有一个美国民意调查数据的数据框，我试图每天填写。我无法弄清楚如何去做。

这是原始数据（数据框不必是多索引）。

                  Democratic         Other  Republican
Date       State                                                
2008-11-04 AZ       0.451153      0.012495    0.536352
2012-05-20 AZ       0.462500      0.000000    0.537500
...
2008-11-04 WI       0.562178      0.014686    0.423137
2012-11-03 WI       0.515152      0.000000    0.484848

我想填写它看起来像这样：

                  Democratic         Other  Republican
Date       State                                                
2008-11-04 AZ       0.451153      0.012495    0.536352
2008-11-05 AZ       0.451153      0.012495    0.536352
...
2012-05-20 AZ       0.462500      0.000000    0.537500
2012-05-21 AZ       0.462500      0.000000    0.537500
...
2012-11-06 AZ       0.462500      0.000000    0.537500
...
2008-11-04 WI       0.562178      0.014686    0.423137
2008-11-05 WI       0.562178      0.014686    0.423137
...
2012-11-03 WI       0.515152      0.000000    0.484848
2012-11-04 WI       0.515152      0.000000    0.484848
2012-11-05 WI       0.515152      0.000000    0.484848
2012-11-06 WI       0.515152      0.000000    0.484848

我试过这样做：

election_range = pd.date_range('2008-11-06', '2012-11-06')
dailies.reindex(election_range, method='pad')

但是我收到了这个错误：

ValueError: cannot include dtype 'M' in a buffer

我尝试在日期上编制索引，但我收到的错误是索引不是唯一的。

显而易见的事情是逐帧拆分帧，重新索引并组合帧，但必须有更好的方法。有没有人有任何想法？

Answer 1

尝试：

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填充多索引pandas数据帧

1 个答案: