Python 对时区的处理

from datetime import datetime, timezone, timedelta
  
tz = timezone(timedelta(hours=+8))
  
fmt = '%Y-%m-%dT%H:%M:%S.%f%z'
zoned_time1 = datetime.today().astimezone(tz)
print(1, zoned_time1.strftime(fmt))  #1 2023-01-03T09:33:27.074210+0800
  
zoned_time2 = datetime.now(tz)
print(2, zoned_time2.strftime(fmt)) #2 2023-01-03T09:33:27.075036+0800
  
zoned_time3 = datetime.utcnow()
print(3, zoned_time3.isoformat()) #3 2023-01-03T01:33:27.075785  
  
print(4, zoned_time2.strftime('%Y-%m-%dT%H:%M:%S.%f%Z')) #4 2023-01-03T09:33:27.075036UTC+08:00
  
timestamp = datetime.today().timestamp()
print(5, timestamp)         #5 1672709607.077365
print(6, datetime.fromtimestamp(timestamp, tz=tz)) #6 2023-01-03 09:33:27.077365+08:00
  
zoned_time4 = datetime(2023, 1, 3, 9, 31, 34, 345, tzinfo=tz)
print(7, zoned_time4.isoformat())  #7 2023-01-03T09:31:34.000345+08:00
  
print(8, zoned_time2.isoformat())  #8 2023-01-03T09:33:27.075036+08:00