我有一个pandas数据框,并在阅读了一些评论后(谢谢)想澄清一下。
我已将BeginDate列定义为
data['BeginDate'] = pd.to_datetime(data.BeginDate)
data = data.sort_values(['BeginDate'], ascending = [False])
通过打印类型(data ['BeginDate'])返回
<class 'pandas.core.series.Series'>
BeginDate X
11/18/2017 5:00 2780.784
11/18/2017 6:00 2652.312
11/18/2017 7:00 2596.198
11/18/2017 8:00 2573.241
11/18/2017 9:00 2601.293
11/18/2017 10:00 2803.294
11/18/2017 11:00 2964.356
11/18/2017 12:00 3117.072
11/18/2017 13:00 3254.652
11/19/2017 5:00 2446.695
11/19/2017 6:00 2301.853
11/19/2017 7:00 2204.87
11/19/2017 8:00 2188.789
11/19/2017 9:00 2162.051
11/19/2017 10:00 2289.19
11/19/2017 11:00 2317.428
11/19/2017 12:00 2501.4
11/19/2017 13:00 2686.298
11/19/2017 14:00 2889.88
11/19/2017 15:00 3032.894
11/19/2017 16:00 3027.868
11/19/2017 17:00 3077.443
11/19/2017 18:00 3006.568
11/19/2017 19:00 3046.463
11/19/2017 20:00 3085.442
11/19/2017 21:00 3308.473
11/19/2017 22:00 3679.34
11/19/2017 23:00 3664.858
11/20/2017 0:00 3577.343
11/20/2017 1:00 3385.539
11/20/2017 2:00 3146.491
11/20/2017 3:00 2954.23
11/20/2017 4:00 2676.333
我尝试按'BeginDate'列按下列方式对此数据进行排序,如下所示
data = data.sort_values(['BeginDate'], ascending = [False])
然而,通过这样做,它不仅会失败,而且会将数据混杂成一种对我来说毫无意义的数据。
BeginDate X
11/19/2017 5:00 2446.695
11/19/2017 6:00 2301.853
11/19/2017 7:00 2204.87
11/19/2017 8:00 2188.789
11/19/2017 9:00 2162.051
11/19/2017 10:00 2289.19
11/19/2017 11:00 2317.428
11/19/2017 12:00 2501.4
11/19/2017 13:00 2686.298
11/19/2017 14:00 2889.88
11/19/2017 15:00 3032.894
11/19/2017 16:00 3027.868
11/19/2017 17:00 3077.443
11/19/2017 18:00 3006.568
11/19/2017 19:00 3046.463
11/19/2017 20:00 3085.442
11/19/2017 21:00 3308.473
11/19/2017 22:00 3679.34
11/19/2017 23:00 3664.858
11/20/2017 0:00 3577.343
11/20/2017 1:00 3385.539
11/20/2017 2:00 3146.491
11/20/2017 3:00 2954.23
11/20/2017 4:00 2676.333
11/18/2017 5:00 2780.784
11/18/2017 6:00 2652.312
11/18/2017 7:00 2596.198
11/18/2017 8:00 2573.241
11/18/2017 9:00 2601.293
11/18/2017 10:00 2803.294
11/18/2017 11:00 2964.356
11/18/2017 12:00 3117.072
11/18/2017 13:00 3254.652
我不确定是什么导致这种情况发生,而且我可以告诉我的BeginDate列现在格式正确。在此先感谢您的帮助!
根据评论中的要求,print(data.info())产生
BeginDate 72 non-null datetime64[ns]
X 72 non-null float64