def handle_uploaded_files(form_definition, form):
    files = []
    if form_definition.save_uploaded_files and len(form.file_fields):
        storage = get_storage()
        secret_hash = hashlib.sha1(str(uuid.uuid4())).hexdigest()[:10]
        for field in form.file_fields:
            uploaded_file = form.cleaned_data.get(field.name, None)
            if uploaded_file is None:
                continue
            valid_file_name = storage.get_valid_name(uploaded_file.name)
            root, ext = os.path.splitext(valid_file_name)
            filename = storage.get_available_name(
                os.path.join(app_settings.FILE_STORAGE_DIR, 
                form_definition.name, 
                (root, secret_hash, ext) % '%s_%s%s'))
            storage.save(filename, uploaded_file)
            form.cleaned_data[field.name] = StoredUploadedFile(filename)
            files.append(storage.path(filename))
    return files
dataset/ETHPy150Open samluescher/django-form-designer/form_designer/uploads.py/handle_uploaded_files/swapped operands of `%`