How to use the ipwb.util.isLocalHosty function in ipwb

def showMementosForURIRs(urir):
    urir = getCompleteURI(urir)

    if ipwbUtils.isLocalHosty(urir):
        urir = urir.split('/', 4)[4]

    indexPath = ipwbUtils.getIPWBReplayIndexPath()

    print('Getting CDXJ Lines with the URI-R {0} from {1}'
          .format(urir, indexPath))
    cdxjLinesWithURIR = getCDXJLinesWithURIR(urir, indexPath)

    if len(cdxjLinesWithURIR) == 1:
        fields = cdxjLinesWithURIR[0].split(' ', 2)
        redirectURI = '/memento/{1}/{0}'.format(unsurt(fields[0]), fields[1])

        return redirect(redirectURI, code=302)

    msg = ''
    if cdxjLinesWithURIR:

def resolveMemento(urir, datetime):
    """ Request a URI-R at a supplied datetime from the CDXJ """
    urir = getCompleteURI(urir)

    if ipwbUtils.isLocalHosty(urir):
        urir = urir.split('/', 4)[4]
    s = surt.surt(urir, path_strip_trailing_slash_unless_empty=False)
    indexPath = ipwbUtils.getIPWBReplayIndexPath()

    print('Getting CDXJ Lines with the URI-R {0} from {1}'
          .format(urir, indexPath))
    cdxjLinesWithURIR = getCDXJLinesWithURIR(urir, indexPath)

    closestLine = getCDXJLineClosestTo(datetime, cdxjLinesWithURIR)

    if closestLine is None:
        msg = '<h1>ERROR 404</h1>'
        msg += 'No capture found for {0} at {1}.'.format(urir, datetime)

        return Response(msg, status=404)