python - 星期几错误处理

Question

我是 pandas 的新手，正在尝试从时间戳中获取星期几。

我有以下DF

    Date    Open    High
0   2015-07-13  532.880005  547.109985
1   2015-07-14  546.760010  565.848999
2   2015-07-15  560.130005  566.502991
3   2015-07-16  565.119995  580.679993
4   2015-07-17  649.000000  674.468018

我想知道它发生在一周中的哪一天，我做了以下操作:

G['weekday'] = G['Date'].dt.dayofweek()

我收到以下错误:

TypeError                                 Traceback (most recent call last)
<ipython-input-55-b3724388eff0> in <module>()
----> 1 G['weekday'] = G['Date'].dt.dayofweek()

TypeError: 'Series' object is not callable 

提前致谢

Answer 1

因此 df['Date'].dt.dayofweek 返回一个系列。而是这样做:

df['weekday'] = df['Date'].dt.dayofweek

>>> df        Date        Open        High  weekday0 2015-07-13  532.880005  547.109985        01 2015-07-14  546.760010  565.848999        12 2015-07-15  560.130005  566.502991        23 2015-07-16  565.119995  580.679993        34 2015-07-17  649.000000  674.468018        4