def loadData(request):
    import xlrd
    import urllib

    print "loadData"
    underlys = Underlying.objects.all()

    for u in underlys:

        link = 'http://www.url.com/?file'
        try:

            fileHandler = urllib.urlopen(link)
            file = fileHandler.read()
           xlrd.???(file)
        except :
            print "URL Loading Error : %s"%u.code


    return HttpResponse("Done")

我想問，xlrd 如何才能讀取這file 呢?