def handle(self, *args, **options):
        try:
            xls_filepath = args[0]
        except __HOLE__:
            raise CommandError(_("You must provide the path to the xls file."))
        # make sure path exists
        if not os.path.exists(xls_filepath):
            raise CommandError(
                _("The xls file '%s' does not exist.") %
                xls_filepath)

        try:
            username = args[1]
        except IndexError:
            raise CommandError(_(
                "You must provide the username to publish the form to."))
        # make sure user exists
        try:
            user = User.objects.get(username=username)
        except User.DoesNotExist:
            raise CommandError(_("The user '%s' does not exist.") % username)

        # wasteful but we need to get the id_string beforehand
        survey = create_survey_from_xls(xls_filepath)

        # check if a form with this id_string exists for this user
        form_already_exists = XForm.objects.filter(
            user=user, id_string=survey.id_string).count() > 0

        # id_string of form to replace, if any
        id_string = None
        if form_already_exists:
            if 'replace' in options and options['replace']:
                id_string = survey.id_string
                self.stdout.write(_("Form already exist, replacing ..\n"))
            else:
                raise CommandError(_(
                    "The form with id_string '%s' already exists, use the -r "
                    "option to replace it.") % survey.id_string)
        else:
            self.stdout.write(_("Form does NOT exist, publishing ..\n"))

        # publish
        xls_file = django_file(
            xls_filepath, 'xls_file', 'application/vnd.ms-excel')
        publish_xls_form(xls_file, user, id_string)
        self.stdout.write(_("Done..\n"))
dataset/ETHPy150Open kobotoolbox/kobocat/onadata/apps/logger/management/commands/publish_xls.py/Command.handle