Setting Timezone in Python

Setting timezone in Python

>>> import os, time
>>> time.strftime('%X %x %Z')
'12:45:20 08/19/09 CDT'
>>> os.environ['TZ'] = 'Europe/London'
>>> time.tzset()
>>> time.strftime('%X %x %Z')
'18:45:39 08/19/09 BST'

To get the specific values you've listed:

>>> year = time.strftime('%Y')
>>> month = time.strftime('%m')
>>> day = time.strftime('%d')
>>> hour = time.strftime('%H')
>>> minute = time.strftime('%M')

See here for a complete list of directives. Keep in mind that the strftime() function will always return a string, not an integer or other type.

How to set time zone to datetime now in Python?

Try this:

Before Python 3.6 you can use pytz (external package)

from datetime import datetime
from pytz import timezone    

print(datetime.now(timezone('Europe/London')))

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Update according @WolfgangKuehn comment

Starting from Python 3.6 you can use zoneinfo via standard library (>=3.9) or backport instead of pytz

from datetime import datetime
from zoneinfo import ZoneInfo

print(datetime.now(ZoneInfo('Europe/London')))

how to set timezone to eastern for DateTime module in python?

Your date is a "naive" datetime, it doesn't have a timezone (tz=None).
Then you have to localize this datetime by setting a timezone. Use pytz module to do that.

Here is an example :

from datetime import datetime
from pytz import timezone
# define date format
fmt = '%Y-%m-%d %H:%M:%S %Z%z'
# define eastern timezone
eastern = timezone('US/Eastern')
# naive datetime
naive_dt = datetime.now()
# localized datetime
loc_dt = datetime.now(eastern)
print(naive_dt.strftime(fmt))
# 2015-12-31 19:21:00 
print(loc_dt.strftime(fmt))
# 2015-12-31 19:21:00 EST-0500

Read pytz documentation for more information

How to make a timezone aware datetime object

In general, to make a naive datetime timezone-aware, use the localize method:

import datetime
import pytz

unaware = datetime.datetime(2011, 8, 15, 8, 15, 12, 0)
aware = datetime.datetime(2011, 8, 15, 8, 15, 12, 0, pytz.UTC)

now_aware = pytz.utc.localize(unaware)
assert aware == now_aware

For the UTC timezone, it is not really necessary to use localize since there is no daylight savings time calculation to handle:

now_aware = unaware.replace(tzinfo=pytz.UTC)

works. (.replace returns a new datetime; it does not modify unaware.)

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