services.py 文件源码

def reading_timestamp_to_datetime(string):
    """
    Converts a string containing a timestamp to a timezone aware datetime.
    """
    timestamp = re.search(r'(\d{2,2})(\d{2,2})(\d{2,2})(\d{2,2})(\d{2,2})(\d{2,2})([WS])+', string)
    meter_timestamp = timezone.datetime(
        year=2000 + int(timestamp.group(1)),
        month=int(timestamp.group(2)),
        day=int(timestamp.group(3)),
        hour=int(timestamp.group(4)),
        minute=int(timestamp.group(5)),
        second=int(timestamp.group(6)),
    )
    is_dst = timestamp.group(7) == 'S'
    local_timezone = pytz.timezone(settings.TIME_ZONE)
    return local_timezone.localize(meter_timestamp, is_dst=is_dst).astimezone(pytz.utc)