python中date、datetime、string的相互轉換

import datetime

import time

#string轉datetime

str = '2012-11-19'

date_time = datetime.datetime.strptime(str,'%Y-%m-%d')

date_time

datetime.datetime(2012,11,19,0,0)

#datetime轉string

date_time.strftime('%Y-%m-%d')

'2012-11-19'

#datetime轉時間戳

time_time = time.mktime(date_time.timetuple())

time_time

1353254400.0

#時間戳轉string

time.strftime('%Y-%m-%d',time.localtime(time_time))

'2012-11-19'

#date轉datetime

date = datetime.date.today()

date

datetime.date(2012,11,19)

datetime.datetime.strptime(str(date),'%Y-%m-%d') #將date轉換爲str，在由str轉換爲datetime

datetime.datetime(2012,11,19,0,0)