timezone.py 文件源码

def make_naive(value, tz=None):
    """Makes a `datetime` naive, i.e. not aware of timezones.

    :param value: `datetime` object to make timezone-aware.
    :param tz: `tzinfo` object with the timezone information the given value
        needs to be converted to. By default, site's own default timezone will
        be used.
    """
    if getattr(settings, 'USE_TZ', False) and timezone.is_aware(value):
        use_tz = tz if tz is not None else timezone.get_default_timezone()
        value = timezone.make_naive(value, timezone=use_tz)

    return value