在数据框中,我想将多种日期格式更改为通用格式。
1)var output = String.Join('.', input.Split(',')); //--> 30.32.13
2)"12/01/2011 11:25 PM"
3)"Thu, Dec 1 8:15 AM"
4)"Dec.01, 2011 4:00 p.m"
5)"2011 - 12 - 01 10:33 AM"
6)"12/1/2011 12:18PM "
7)"12/1/11 2:06 PM (-05:00)"
8)"2:07 PMDec 01"
"12:18 PM, Dec 01"
在以下格式中失败:
6)parse(x)
7)"12/1/11 2:06 PM (-05:00)"
是否可以为这些自定义日期格式创建参数?
答案 0 :(得分:0)
使用:
import pandas as pd
pd.to_datetime(DateString, format=FormatString)
下面是示例代码:
date_old = '12/01/2011 11:25 PM'
date_new = pd.to_datetime(date_old, format='%d/%m/%Y %I:%M %p')
date_old = 'Dec.01, 2011 4:00 p.m'
date_new = pd.to_datetime(date_old[:-2] + 'm', format='%b.%d, %Y %I:%M %p')
date_old = '2011 - 12 - 01 10:33 AM'
date_new = pd.to_datetime(date_old, format='%Y - %m - %d %I:%M %p')
date_old = '12/1/2011 12:18PM '
date_new = pd.to_datetime(date_old, format='%d/%m/%Y %I:%M%p ')
from datetime import timedelta
date_old = '12/1/11 2:06 PM (-05:00)'
date_new = pd.to_datetime(date_old[:-9], format='%d/%m/%y %I:%M %p') - timedelta(hours=int(date_old[-6:-4]), minutes=int(date_old[-3:-1]))
date_old = '2:07 PMDec 01'
date_new = pd.to_datetime(date_old, format='%I:%M %p%b %d')
date_old = "12:18 PM, Dec 01"
date_new = pd.to_datetime(date_old, format='%I:%M %p, %b %d')
有关合法格式代码,请参阅https://www.w3schools.com/python/python_datetime.asp。