Migrating from pytz to ZoneInfo (python 3.9+)

December 9, 2023

Django 5.0 removed pytz in favor of python 3.9+ supported ZoneInfo. Adding tzinfo to naked datetime using pytz: pytz.timezone("Europe/Helsinki").localize(non_tz_datetime) becomes non_tz_datetime.replace(tzinfo=ZoneInfo("Europe/Helsinki")) Converting to timezone using pytz: timestamp.astimezone(pytz.timezone("Europe/Helsinki")) becomes timestamp.astimezone(ZoneInfo("Europe/Helsinki")) Note that ZoneInfo is not available before python 3.9 so to support 3.8 (we have couple of old servers) need to import ZoneInfo with try: import zoneinfo # noqa except ImportError: from backports import zoneinfo # type: ignore # noqa from zoneinfo import ZoneInfo and in requirements. ...