使用localize
方法:
import pytz
import datetime
naive_date = datetime.datetime.strptime("2013-10-21 08:44:08", "%Y-%m-%d %H:%M:%s")
localtz = pytz.timezone('America/Los_Angeles')
date_aware_la = localtz.localize(naive_date)
print(date_aware_la) # 2013-10-21 08:44:08-07:00
然后继续使用UTC:
utc_date = date_aware_la.astimezone(pytz.utc)
print(utc_date)