【python】datetime獲取日期,前一天日期

1.獲取字符串型當前日期 2016-10-09格式

import datetime
today = datetime.date.today()   #datetime.date類型當前日期
str_today = str(today)   #字符串型當前日期

 

2.獲取datetime.datetime類型當前日期

from datetime import datetime, date, timedelta
def getDatetimeToday(self):
        t = date.today()  #date類型
        dt = datetime.strptime(str(t),'%Y-%m-%d') #date轉str再轉datetime
        return dt

 

3.獲取datetime.datetime類型前一天日期

from datetime import datetime, date, timedelta
def getDatetimeYesterday(self):
        today = self.getDatetimeToday() #datetime類型當前日期
        yesterday = today + timedelta(days = -1) #減去一天
        return yesterday