fields.py 文件源码

def create_timezonestamp(value):
    if value.tzinfo and hasattr(value.tzinfo, 'zone'):
        # We have a pytz timezone, we can work with this
        tz = value.tzinfo.zone
    elif value.tzinfo:
        # Got some timezone data, but it's not a pytz timezone
        # Let's just assume someone used dateutil parser on a UTC
        # ISO format timestamp
        # Fixes https://github.com/learningequality/kolibri/issues/1824
        tz = pytz.utc
        value = value.astimezone(tz)
    else:
        tz = timezone.get_current_timezone().zone
        value = timezone.make_aware(value, timezone.get_current_timezone())
    date_time_string = value.astimezone(pytz.utc).strftime(date_time_format)
    tz_string = tz_format.format(tz=tz)
    value = db_storage_string.format(date_time_string=date_time_string, tz_string=tz_string)
    return value