def get_empty_value_display(self):
        """
        Return the empty_value_display set on ModelAdmin or AdminSite.
        """
        try:
            return mark_safe(self.empty_value_display)
        except __HOLE__:
            return mark_safe(self.admin_site.empty_value_display)
dataset/ETHPy150Open django/django/django/contrib/admin/options.py/BaseModelAdmin.get_empty_value_display