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python pytz

admin 11月 12, 2020 0

根据时区获取当前的utc offset（尤其针对有dst要求的时区）以太平洋时区为例（PST/PDT）

import pytz
import datetime

pytz.all_timezonses 
pacific = pytz.timezone('US/Pacific')
now = datetime.datetime.now()
now_tz = pacific.localize(now)
now_tz.strftime("%z")

根据机器时间获取太平洋时间是pst还是pdt

def get_local_utcoffset():
    now = datetime.datetime.now()
    pacific = pytz.timezone('US/Pacific')
    now_tz = pacific.localize(now)
    local_utcoffset = -7 if now_tz.strftime('%z') == '-0700' else -8
    return local_utcoffset

获取两个时区的间隔

def get_delta_utcoffset(utcoffset):
  local_utcoffset = get_local_utcoffset()
  delta_utcoffset = utcoffset - local_utcoffset
  delta_t = datetime.timedelta(hours=delta_utcoffset)
  return delta_utcoffset

将本地时间换算成对应时区的日期

def get_utc_date(utcoffset):
    now = datetime.datetime.now()
    delta_utcoffset = get_delta_utcoffset(utcoffset)
    delta_hour = datetime.timedelta(hours=delta_utcoffset)
    utc_date = now + delta_hour
    utc_date = str(utc_date.date())
    return utc_date

给本地时间加timezone

import datetime
from pytz import timezone
now = datetime.datetime.now()
tz = timezone('US/Pacific')
tznow = tz.localize(now)

format datetime string

import datetime

now = datetime.datetime.now()
now.strftime("%Y-%m-%dT%H:%M:%S.%f%z")