Function _get_tzinfo_name

src/pendulum/_helpers.py:323–337

(tzinfo: datetime.tzinfo | None)

def _get_tzinfo_name(tzinfo: datetime.tzinfo | None) -> str | None:
    if tzinfo is None:
        return None

    if hasattr(tzinfo, "key"):
        # zoneinfo timezone
        return cast("zoneinfo.ZoneInfo", tzinfo).key
    elif hasattr(tzinfo, "name"):
        # Pendulum timezone
        return cast("Timezone", tzinfo).name
    elif hasattr(tzinfo, "zone"):
        # pytz timezone
        return tzinfo.zone  # type: ignore[no-any-return]

    return None