CheatSheet: Python date, time, timezone

Quelques instructions Python pour gérer l’affichage, la conversion des dates et heures.

from datetime import datetime, timezone, timedelta
import pytz
from calendar import timegm
from time import gmtime, strftime, strptime

datetime.now(timezone.utc).astimezone(pytz.timezone('Europe/Paris')).strftime("%d/%m/%Y %H:%M:%S")
#
# '24/10/2020 14:44:04'

# Conversion d'un timestamp UTC en epoch heure locale
#
metadata_video_begin = '2020-10-22 06:59:59'
first_pos_epoch = datetime.fromtimestamp(timegm((strptime(metadata_video_begin, '%Y-%m-%d %H:%M:%S'))), pytz.timezone('Europe/Paris'))
### >>> first_pos_epoch
### datetime.datetime(2020, 10, 22, 8, 59, 59, tzinfo=<DstTzInfo 'Europe/Paris' CEST+2:00:00 DST>)

# Calcul d'un delta et formatage
#
(first_pos_epoch + timedelta(seconds = 120)).strftime("%d/%m/%Y %H:%M:%S")
# '22/10/2020 09:01:59'