How do I print a datetime in the local timezone?

Question

Let's say I have a variable t that's set to this:

datetime.datetime(2009, 7, 10, 18, 44, 59, 193982, tzinfo=<UTC>) 

If I say str(t), i get:

'2009-07-10 18:44:59.193982+00:00' 

How can I get a similar string, except printed in the local timezone rather than UTC?

Answer 1

This script demonstrates a few ways to show the local timezone using astimezone():

#!/usr/bin/env python3  import pytz from datetime import datetime, timezone from tzlocal import get_localzone  utc_dt = datetime.now(timezone.utc)  PST = pytz.timezone('US/Pacific') EST = pytz.timezone('US/Eastern') JST = pytz.timezone('Asia/Tokyo') NZST = pytz.timezone('Pacific/Auckland')  print("Pacific time {}".format(utc_dt.astimezone(PST).isoformat())) print("Eastern time {}".format(utc_dt.astimezone(EST).isoformat())) print("UTC time     {}".format(utc_dt.isoformat())) print("Japan time   {}".format(utc_dt.astimezone(JST).isoformat()))  # Use astimezone() without an argument print("Local time   {}".format(utc_dt.astimezone().isoformat()))  # Use tzlocal get_localzone print("Local time   {}".format(utc_dt.astimezone(get_localzone()).isoformat()))  # Explicitly create a pytz timezone object # Substitute a pytz.timezone object for your timezone print("Local time   {}".format(utc_dt.astimezone(NZST).isoformat())) 

It outputs the following:

$ ./timezones.py  Pacific time 2019-02-22T17:54:14.957299-08:00 Eastern time 2019-02-22T20:54:14.957299-05:00 UTC time     2019-02-23T01:54:14.957299+00:00 Japan time   2019-02-23T10:54:14.957299+09:00 Local time   2019-02-23T14:54:14.957299+13:00 Local time   2019-02-23T14:54:14.957299+13:00 Local time   2019-02-23T14:54:14.957299+13:00 

As of python 3.6 calling astimezone() without a timezone object defaults to the local zone (docs). This means you don't need to import tzlocal and can simply do the following:

#!/usr/bin/env python3  from datetime import datetime, timezone  utc_dt = datetime.now(timezone.utc)  print("Local time {}".format(utc_dt.astimezone().isoformat()))