from wikijs import WikiJs

client = WikiJs(<endpoint>, <api_key>)

OLD_FOLDER = 'OldFolder/'
NEW_FOLDER = 'NewFolder/'

for page in client.search_pages('', OLD_FOLDER):
    new_path = page['path'].replace(OLD_FOLDER, NEW_FOLDER, 1)
    client.move_page(page['id'], new_path, page['locale'])