将带时区的时间字符串转换为utc python

Question

我有一个基本字符串+另一个表示时区的字符串。我试图返回UTC的等价物..

timezone = "America/New_York"
scheduleDate = "2021-09-21 21:00:00"
dtimestamp = datetime.datetime.strptime(scheduleDate, '%Y-%m-%d %H:%M:%S').astimezone(
pytz.timezone(timezone)).timestamp()
sdate = datetime.datetime.utcfromtimestamp(dtimestamp).strftime('%Y-%m-%dT%H:%M:%SZ')
print(sdate)

Answer 1

这是可行的，但不确定是否有更好的方法。我以前没有仔细看过pytz文档。

from datetime import datetime
import pytz
timezone = "America/New_York"
scheduleDate = "2021-09-21 21:00:00"
# Convert to naive datetime
dt_naive: datetime = datetime.strptime(scheduleDate, '%Y-%m-%d %H:%M:%S')
# localize datetime with ET timezone
dt: datetime = pytz.timezone(timezone).localize(dt_naive)
# normalize datetime to UTC time
dt_utc: datetime = pytz.utc.normalize(dt)
print(str(dt_utc))