好記性不如爛筆頭.

from dateutil import tz
from dateutil.tz import tzlocal
from datetime import datetime

# get local time zone name
tz_name = datetime.now(tzlocal()).tzname()  
# UTC Zone
from_zone = tz.gettz('UTC')
# local Zone
to_zone = tz.gettz(tz_name)

1. UTC -> Local

utc = datetime.utcnow()
# Tell the datetime object that it's in UTC time zone
 

utc = utc.replace(tzinfo=from_zone)

# Convert time zone
local = utc.astimezone(to_zone)
print(local)

2. Local -> UTC

2.1 使用dateutil

now = datetime.now(tz=to_zone)
now.replace(tzinfo=from_zone)
utc = now.astimezone(from_zone)
print(utc)

2.2 現將Local time轉為timestamp，然後再將其轉換為UTC time.

import
 
 datetime
import time

today = datetime.datetime.today()
stamp = time.mktime(today.timetuple())
utc_now = datetime.datetime.utcfromtimestamp(stamp)
print(today)