update.py 文件源码

def download_workflow(url):
    """Download workflow at ``url`` to a local temporary file.

    :param url: URL to .alfredworkflow file in GitHub repo
    :returns: path to downloaded file

    """
    filename = url.split("/")[-1]

    if (not filename.endswith('.alfredworkflow') and
            not filename.endswith('.alfred3workflow')):
        raise ValueError('Attachment `{0}` not a workflow'.format(filename))

    local_path = os.path.join(tempfile.gettempdir(), filename)

    wf().logger.debug(
        'Downloading updated workflow from `%s` to `%s` ...', url, local_path)

    response = web.get(url)

    with open(local_path, 'wb') as output:
        output.write(response.content)

    return local_path