datatime

获得datetime类别数值

from datetime import datetime

datetime.today()

datetime.utcnow()

datetime.now().year()

datetime.today().date()

转换文字string为datetime数值

datetime.strptime("2012-09-11", '%Y-%m-%d')

d = datetime.datetime(1984, 1, 10, 23, 30)

d.strftime("%B %d, %Y")

>> 'January 10, 1984'

计算时间区别

from datetime import timedelta

timedelta(days=15)

international standard for the representation of dates and times. Python has a method for quickly generating an ISO 8601 formatted date/time:

d.isoformat()

> '1984-01-10T23:30:00'

跨时区时间获取

import pytz

utc_now = pytz.utc.localize(datetime.datetime.utcnow())

pst_now = utc_now.astimezone(pytz.timezone("America/Los_Angeles"))

utc_now

>> datetime.datetime(2020, 8, 18, 10, 32, 2, 624888, tzinfo=<UTC>)

pst_now

>> datetime.datetime(2020, 8, 18, 3, 32, 2, 624888, tzinfo=<DstTzInfo 'America/Los_Angeles' PDT-1 day, 17:00:00 DST>)

pst_now.isoformat()

>> '2020-08-18T03:32:02.624888-07:00'

utc_now.isoformat()

>> '2020-08-18T10:32:02.624888+00:00'