python使用requests时报错requests.exceptions.SSLError: HTTPSConnectionPool
错误信息如下:requests.exceptions.SSLError:HTTPSConnectionPool(host='www.baidu.com',port=443):Maxretriesexceededwithurl:/(CausedbySSLError(SSLError(1,u'[SSL:CERTIFICATE_VERIFY_FAILED]certificateverifyfailed(