Python-将UTC毫秒时间戳转换为本地时间

Question

我有一个Unix历元时间戳（以毫秒为单位），需要获取本地时间的日期字符串。

这是我的代码：

date = datetime.utcfromtimestamp(timestamp / 1000).strftime('%d-%m-%Y')
hour = datetime.utcfromtimestamp(timestamp / 1000).strftime('%H')
month = datetime.utcfromtimestamp(timestamp / 1000).strftime('%m')
monthName = calendar.month_name[int(month)]
weekDay = calendar.day_name[(datetime.strptime(date, '%d-%m-%Y')).weekday()]

由上述函数生成的原始时间戳和结果日期、小时和所有其他值均以UTC为单位。如何更改代码以在当地时间获取它？

Answer 1

要将UTC毫秒时间戳转换为时区感知的日期时间，可以执行以下操作：

def tz_from_utc_ms_ts(utc_ms_ts, tz_info):
    """Given millisecond utc timestamp and a timezone return dateime

    :param utc_ms_ts: Unix UTC timestamp in milliseconds
    :param tz_info: timezone info
    :return: timezone aware datetime
    """
    # convert from time stamp to datetime
    utc_datetime = dt.datetime.utcfromtimestamp(utc_ms_ts / 1000.)

    # set the timezone to UTC, and then convert to desired timezone
    return utc_datetime.replace(tzinfo=pytz.timezone('UTC')).astimezone(tz_info)

import datetime as dt
import pytz

utc_ts = 1537654589000
utc_time = "Sat Sep 22 22:16:29 2018 UTC"
pdt_time = "Sat Sep 22 15:16:29 2018 PDT"

tz_dt = tz_from_utc_ms_ts(utc_ts, pytz.timezone('America/Los_Angeles'))

print(tz_dt)
print(tz_dt.strftime('%d-%m-%Y'))

2018-09-22 15:16:29-07:00
22-09-2018