小编And*_*son的帖子

所以我有以下代码读取 5 列，日期 ohlc。然后它创建一个列“dow”来保存星期几。到现在为止还挺好：

import numpy as np
import pandas as pd
df = pd.read_csv('/content/drive/MyDrive/Forex/EURUSD-2018_12_18-2020_11_01.csv',parse_dates=True,names = ['date','1','2','3','4',])

df['date'] = pd.to_datetime(df['date'])
df.index = df['date']
df['dow'] = df['date'].dt.dayofweek
#df['downum'] = df.apply(lambda x: downu(x['date']))
df

产生以下输出：

                    date                1       2       3       4       dow
date                        
2018-12-18 00:00:00 2018-12-18 00:00:00 1.13498 1.13497 1.13508 1.13494 1
2018-12-18 00:01:00 2018-12-18 00:01:00 1.13497 1.13500 1.13500 1.13496 1
2018-12-18 00:02:00 2018-12-18 00:02:00 1.13500 1.13498 1.13502 1.13495 1
2018-12-18 00:03:00 2018-12-18 00:03:00 1.13498 1.13513 1.13513 1.13498 1
2018-12-18 00:04:00 2018-12-18 00:04:00 …