converting local time to UTC time(datetime object)

Question

I am trying to convert the local time to "UTC" time.

Followed this guide: How do I convert local time to UTC in Python?

But issue here is with the type of date which we giving here.

import pytz, datetime
local = pytz.timezone ("America/Los_Angeles")
naive = datetime.datetime.strptime ("2001-2-3 10:11:12", "%Y-%m-%d %H:%M:%S")
local_dt = local.localize(naive, is_dst=None)
utc_dt = local_dt.astimezone (pytz.utc)

In the above code input is "2001-2-3 10:11:12" (string), But in my case it will be a datetime object.

begin = begin.replace(hour=0, minute=0, second=0, microsecond=0)

Someone let me know how we can achieve the conversion here.

Answer 1

Your string format needs a bit of a modification. You just need the leading zeros in your month and day:

import pytz, datetime
local = pytz.timezone("America/Los_Angeles")
naive = datetime.datetime.strptime ("2001-02-03 10:11:12", "%Y-%m-%d %H:%M:%S")
local_dt = local.localize(naive)
utc_dt = local_dt.astimezone(pytz.utc)

Answer 2

If your input (begin) is not a time string but it is a naive (no timezone info) datetime object already then drop datetime.strptime() line (that parses the time string into datetime object) from the example. To convert a given naive datetime object that represents local time to utc:

import pytz    # $ pip install pytz
import tzlocal # $ pip install tzlocal

local_timezone = tzlocal.get_localzone()
local_dt = local_timezone.localize(begin, is_dst=None)
utc_dt = local_dt.astimezone(pytz.utc)