import argparse

import dateparser
from pytz.exceptions import UnknownTimeZoneError


parser = argparse.ArgumentParser()
parser.add_argument('human_dt')
parser.add_argument('human_tz', nargs='?')
args = parser.parse_args()

human_dt = args.human_dt
human_tz = args.human_tz

try:
    # first try parsing the timezone from user input
    if human_tz:
        result = dateparser.parse(human_dt, settings={'TO_TIMEZONE': human_tz})
    else:
        result = dateparser.parse(human_dt)
except UnknownTimeZoneError:
    # we don't know this timezone one, assume location
    import random
    import string
    
    from geopy.geocoders import Nominatim
    from timezonefinder import TimezoneFinder

    user_agent = ''.join(random.choices(string.ascii_uppercase + string.digits, k=20))
    geolocator = Nominatim(user_agent=user_agent)
    location = geolocator.geocode(human_tz)
    
    tzf = TimezoneFinder()
    loc_tz = tzf.timezone_at(lng=location.longitude, lat=location.latitude)
    result = dateparser.parse(human_dt, settings={'TO_TIMEZONE': loc_tz})
    
print(result)