<p>我有一个格式为'20111014t09000'的字符串,带有相关的时区ID(TZID=America/Los-Angeles),我想要
将其转换为UTC时间(以秒为单位),并具有适当的偏移量。在</p>
<p>问题似乎是我的输出时间关闭了1小时(它在PST中,而它应该是PDT),我使用pytz来帮助timezo</p>
<pre><code>import pytz
def convert_to_utc(date_time)
# date_time set to '2011-10-14 09:00:00' and is initially unaware of timezone information
timezone_id = 'America/Los_Angeles'
tz = pytz.timezone(timezone_id);
# attach the timezone
date_time = date_time.replace(tzinfo=tz);
print("replaced: %s" % date_time);
# this makes date_time to be: 2011-10-14 09:00:00-08:00
# even though the offset should be -7 at the present time
print("tzname: %s" % date_time.tzname());
# tzname reports PST when it should be PDT
print("timetz: %s" % date_time.timetz());
# timetz: 09:00:00-08:00 - expecting offset -7
date_time_ms = int(time.mktime(date_time.utctimetuple()));
# returns '1318611600' which is
# GMT: Fri, 14 Oct 2011 17:00:00 GMT
# Local: Fri Oct 14 2011 10:00:00 GMT-7
# when expecting: '1318608000' seconds, which is
# GMT: Fri, 14 Oct 2011 16:00:00 GMT
# Local: Fri Oct 14 2011 9:00:00 GMT-7 -- expected value
</code></pre>
<p>如何根据时区Id获取正确的偏移量?在</p>