问题
Given a pytz timezone for a particular user(calculated from his offset), i want to display the common name for that timezone. I'm assuming people are more accustomed to seeing EST or PST instead of spelled out like America/NewYork.
Does pytz give me those standard names somewhere, or will i have to manually do this via a table? This could potentially get messy, since for example places are EST in a season and shift to showing EDT during others.
回答1:
Given a pytz timezone for a particular user(calculated from his offset), i want to display the common name for that timezone. I'm assuming people are more accustomed to seeing EST or PST instead of spelled out like America/NewYork.
If you need this derived from a datetime object localized with pytz...
>>> import pytz as tz
>>> from datetime import datetime as dt
>>> CT = tz.timezone('America/Chicago')
>>>
>>> summer_day = dt(2010, 7, 4, 0, 1, 1)
>>> bar = CT.localize(summer_day, is_dst=None)
>>> bar.tzname()
'CDT'
>>>
>>> christmas = dt(2010, 12, 25, 0, 1, 1)
>>> foo = CT.localize(christmas, is_dst=None)
>>> foo.tzname()
'CST'
>>>
回答2:
You can use the tzname() method of tzinfo instances:
>>> tz = timezone('America/St_Johns')
>>> normal = datetime(2009, 9, 1)
>>> tz.tzname(normal, is_dst=False)
'NDT'
回答3:
If you are looking for the abbreviations then there are a few ways that come to mind.
First would be:
>>> from pytz import timezone
>>> eastern = timezone('US/Eastern')
>>> eastern._tzname
'EST'
Although since that references a property with the preceding single underscore it may be considered private and might not be the best place to grab it. The other would be from a localized datetime object.
>>> from datetime import datetime
>>> loc_dt = eastern.localize(datetime.now())
>>> loc_dt.strftime('%Z')
'EST'
回答4:
This may not have been around when this question was originally written, but here is a snippet to get the time zone official designation:
>>> eastern = timezone('US/Eastern')
>>> eastern.zone
'US/Eastern'
Further, this can be used with a non-naive datetime object (aka a datetime where the actual timezone has been set using pytz.<timezone>.localize(<datetime_object>) or datetime_object.astimezone(pytz.<timezone>) as follows:
>>> import datetime, pytz
>>> todaynow = datetime.datetime.now(tz=pytz.timezone('US/Hawaii'))
>>> todaynow.tzinfo # turned into a string, it can be split/parsed
<DstTzInfo 'US/Hawaii' HST-1 day, 14:00:00 STD>
>>> todaynow.strftime("%Z")
'HST'
>>> todaynow.tzinfo.zone
'US/Hawaii'
This is, of course, for the edification of those search engine users who landed here. ... See more at the pytz module site.
来源：https://stackoverflow.com/questions/5946499/how-to-get-the-common-name-for-a-pytz-timezone-eg-est-edt-for-america-new-york