error：requests.exceptions.ConnectionError

Question

我尝试用两种方式连接共享点：

#one way 
server_url = 'http://*****/'
site_url = server_url + '*****'
opener.open(server_url)
opener = basic_auth_opener(server_url,'****', '******')

#another way
from requests.auth import HTTPBasicAuth
reportReq = requests.get('%s:%d/' % ('http://*******', 80),     auth=HTTPBasicAuth('*****', '****'), verify=True)

这是错误：

requests.exceptions.ConnectionError: HTTPConnectionPool(host='***', port=80): (Caused by <class 'socket.gaierror'>: [Errno -2] Name or service not known)