Co oznacza ten komunikat w języku Python?

Question

Co oznacza ten błąd w pythonach? Czy to oznacza, że ​​próbuje połączyć się z serwerem i nie mógł? Co oznacza [Errno 8] nodename nor servname provided, or not known?

File "python2.7/site-packages/requests/api.py", line 55, in get

File "python2.7/site-packages/requests/api.py", line 44, in request

File "python2.7/site-packages/requests/sessions.py", line 279, in request

File "python2.7/site-packages/requests/sessions.py", line 374, in send

File "python2.7/site-packages/requests/adapters.py", line 209, in send

ConnectionError: HTTPConnectionPool(host='localhost', port=8091): Max retries exceeded with url: /pools/default (Caused by : [Errno 8] nodename nor servname provided, or not known

Kod generowany w ten sposób: http://github.com...

class RestConnection(object): 
    def __init__(self, serverInfo): 
     #serverInfo can be a json object 
     if isinstance(serverInfo, dict): 
      self.ip = serverInfo["ip"] 
      self.username = serverInfo["username"] 
      self.password = serverInfo["password"] 
      self.port = serverInfo["port"] 
      self.couch_api_base = serverInfo.get("couchApiBase") 
     else: 
      self.ip = serverInfo.ip 
      self.username = serverInfo.rest_username 
      self.password = serverInfo.rest_password 
      self.port = serverInfo.port 
      self.couch_api_base = None 

     self.base_url = "http://{0}:{1}".format(self.ip, self.port) 
     server_config_uri = ''.join([self.base_url, '/pools/default']) 
     self.config = requests.get(server_config_uri).json() 
     # if couchApiBase is not set earlier, let's look it up 
     if self.couch_api_base is None: 
      #couchApiBase is not in node config before Couchbase Server 2.0 
      self.couch_api_base = self.config["nodes"][0].get("couchApiBase") 

FYI, błąd ten jest generowany przez klienta Couchbase Pythona.

Answer 1

Oznacza to, że wyszukiwanie DNS nazwy hosta, do którego próbujesz uzyskać dostęp, nie powiodło się. Na przykład, mam ten sam błąd, gdy próbuję patrzeć nieprawidłową nazwę hosta:

>>> import requests 
>>> requests.get('http://apsoapsodjaopisjdaoij.com') 
Traceback (most recent call last): 
    File "<stdin>", line 1, in <module> 
    File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/requests/api.py", line 65, in get 
    return request('get', url, **kwargs) 
    File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/requests/safe_mode.py", line 39, in wrapped 
    return function(method, url, **kwargs) 
    File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/requests/api.py", line 51, in request 
    return session.request(method=method, url=url, **kwargs) 
    File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/requests/sessions.py", line 241, in request 
    r.send(prefetch=prefetch) 
    File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/requests/models.py", line 631, in send 
    raise ConnectionError(sockerr) 
requests.exceptions.ConnectionError: [Errno 8] nodename nor servname provided, or not known 

sprawdzić wartość serverInfo["ip"] i upewnić się, że prawidłowo ustawione.