将LinkedIn API与Python结合使用

Question

我正在尝试使用LinkedIn API让用户登录到我们基于谷歌应用引擎的系统。我正在使用ozgur/pythonLinkedIn库来实现它。在

到目前为止，我已经能够print authentication.authorization_url，并获得{}。在

 authentication = linkedin.LinkedInAuthentication(API_KEY, API_SECRET, RETURN_URL, linkedin.PERMISSIONS.enums.values())
 print authentication.authorization_url  # open this url on your browser
 application = linkedin.LinkedInApplication(authentication)
 authentication.authorization_code = 'xxxxxxxxxxxxxxxxxxx'
 authentication.get_access_token()

现在，一旦我调用get_access_token方法，就会出现以下错误：

ConnectionError: HTTPSConnectionPool(host='www.linkedin.com', port=443): Max retries exceeded with url: /uas/oauth2/accessToken (Caused by : [Errno 13] Permission denied)