human
I wrote the below code

    global _original_webapi_auth_backends
    def apply_setting(settings_key, db_key, default=None):
        u'Apply    the    given    siteconfig    value    to    the    Django    settings    object.'
        db_value = siteconfig.settings.get(db_key)
        if db_value:
            setattr(settings, settings_key, db_value)
        elif default:
            setattr(settings, settings_key, default)
    def update_haystack_settings():
        u'Update    the    haystack    settings    in    site    config.'
        search_backend_id = (siteconfig.get(u'search_backend_id') or defaults[u'search_backend_id'])
        search_backend = search_backend_registry.get_search_backend(search_backend_id)
        if (not search_backend):
            raise ImproperlyConfigured(_((u'The    search    engine    "%s"    could    not    be    found.    If    this    is    provided    by    an    extension,    you    will    have    to    make    sure    that    extension    is    enabled.' % search_backend_id)))
        apply_setting(u'HAYSTACK_CONNECTIONS', None, {u'default': search_backend.configuration})
        connections.connections_info = settings.HAYSTACK_CONNECTIONS
        connections._connections = {}
    dirty = False
    try:
        siteconfig = SiteConfiguration.objects.get_current()
    except SiteConfiguration.DoesNotExist:
        raise ImproperlyConfigured(u'The    site    configuration    entry    does    not    exist    in    the    database.    Re-run    `./manage.py`    syncdb    to    fix    this.')
    except Exception as e:
        logging.error((u'Could    not    load    siteconfig:    %s' % e))
        return
    if (not siteconfig.get_defaults()):
        siteconfig.add_defaults(defaults)
    mail_default_from = siteconfig.settings.get(u'mail_default_from', global_settings.DEFAULT_FROM_EMAIL)
    if ((not mail_default_from) or (mail_default_from == global_settings.DEFAULT_FROM_EMAIL)):
        domain = siteconfig.site.domain.split(u':')[0]
        siteconfig.set(u'mail_default_from', (u'noreply@' +...

What's a good function header?
assistant
#Here is Python program to fix    this.

def load_site_config(full_reload=False):