YCMD not working for python script

[sixshotx]

Description

YCMD Auto-completion not working for python

Reproduction guide 🪲

• Start Emacs
• Enable YCMD in python-mode
• auto completion is not working

Observed behaviour: 👀 💔
Connection refused reported from ycmd-server

System Info 💻

• OS: gnu/linux
• Emacs: 25.1.1
• Spacemacs: 0.105.22
• Spacemacs branch: develop (rev. 4c165ad)
• Graphic display: t
• Distribution: spacemacs
• Editing style: hybrid
• Completion: helm
• Layers:

(helm spell-checking syntax-checking
      (auto-completion :variables auto-completion-return-key-behavior 'complete auto-completion-tab-key-behavior 'cycle auto-completion-complete-with-key-sequence nil auto-completion-complete-with-key-sequence-delay 0.1 auto-completion-enable-snippets-in-popup t auto-completion-private-snippets-directory nil)
      better-defaults
      semantic
      (ycmd :variables ycmd-server-command
            '("python" "/home/sixshotx/Repo/git/ycmd/ycmd/")
            ycmd-force-semantic-completion nil))

• YCMD user config:

(with-eval-after-load 'python
    (add-hook 'python-mode-hook 'ycmd-mode)
    (setq python-shell-interpreter "python3"))

ycmd-server log 🐾

2016-09-23 16:04:02,795 - DEBUG - Global extra conf not loaded or no function YcmCorePreload
serving on http://127.0.0.1:35797
2016-09-23 16:04:02,809 - INFO - Received ready request
2016-09-23 16:04:02,810 - INFO - Starting JediHTTP server
2016-09-23 16:04:02,810 - INFO - using port 33695
2016-09-23 16:04:02,813 - DEBUG - Making JediHTTP request: POST b'http://127.0.0.1:33695/ready' {'x-jedihttp-hmac': b'SPp3bQuF0Y04ABwByTHryT461+zVlQVXBrBqfJE9qr0=', 'content-type': 'application/json'} b''
2016-09-23 16:04:02,816 - INFO - Starting new HTTP connection (1): 127.0.0.1
2016-09-23 16:04:02,816 - ERROR - HTTPConnectionPool(host='127.0.0.1', port=33695): Max retries exceeded with url: /ready (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x7ff1902a9358>: Failed to establish a new connection: [Errno 111] Connection refused',))
Traceback (most recent call last):
  File "/home/sixshotx/Repo/git/ycmd/third_party/requests/requests/packages/urllib3/connection.py", line 137, in _new_conn
    (self.host, self.port), self.timeout, **extra_kw)
  File "/home/sixshotx/Repo/git/ycmd/third_party/requests/requests/packages/urllib3/util/connection.py", line 91, in create_connection
    raise err
  File "/home/sixshotx/Repo/git/ycmd/third_party/requests/requests/packages/urllib3/util/connection.py", line 81, in create_connection
    sock.connect(sa)
ConnectionRefusedError: [Errno 111] Connection refused

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/sixshotx/Repo/git/ycmd/third_party/requests/requests/packages/urllib3/connectionpool.py", line 559, in urlopen
    body=body, headers=headers)
  File "/home/sixshotx/Repo/git/ycmd/third_party/requests/requests/packages/urllib3/connectionpool.py", line 353, in _make_request
    conn.request(method, url, **httplib_request_kw)
  File "/usr/lib/python3.5/http/client.py", line 1106, in request
    self._send_request(method, url, body, headers)
  File "/usr/lib/python3.5/http/client.py", line 1151, in _send_request
    self.endheaders(body)
  File "/usr/lib/python3.5/http/client.py", line 1102, in endheaders
    self._send_output(message_body)
  File "/usr/lib/python3.5/http/client.py", line 934, in _send_output
    self.send(msg)
  File "/usr/lib/python3.5/http/client.py", line 877, in send
    self.connect()
  File "/home/sixshotx/Repo/git/ycmd/third_party/requests/requests/packages/urllib3/connection.py", line 162, in connect
    conn = self._new_conn()
  File "/home/sixshotx/Repo/git/ycmd/third_party/requests/requests/packages/urllib3/connection.py", line 146, in _new_conn
    self, "Failed to establish a new connection: %s" % e)
requests.packages.urllib3.exceptions.NewConnectionError: <requests.packages.urllib3.connection.HTTPConnection object at 0x7ff1902a9358>: Failed to establish a new connection: [Errno 111] Connection refused

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/sixshotx/Repo/git/ycmd/third_party/requests/requests/adapters.py", line 376, in send
    timeout=timeout
  File "/home/sixshotx/Repo/git/ycmd/third_party/requests/requests/packages/urllib3/connectionpool.py", line 609, in urlopen
    _stacktrace=sys.exc_info()[2])
  File "/home/sixshotx/Repo/git/ycmd/third_party/requests/requests/packages/urllib3/util/retry.py", line 273, in increment
    raise MaxRetryError(_pool, url, error or ResponseError(cause))
requests.packages.urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='127.0.0.1', port=33695): Max retries exceeded with url: /ready (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x7ff1902a9358>: Failed to establish a new connection: [Errno 111] Connection refused',))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/sixshotx/Repo/git/ycmd/ycmd/../ycmd/completers/python/jedi_completer.py", line 105, in ServerIsHealthy
    return bool( self._GetResponse( '/ready' ) )
  File "/home/sixshotx/Repo/git/ycmd/ycmd/../ycmd/completers/python/jedi_completer.py", line 213, in _GetResponse
    headers = extra_headers )
  File "/home/sixshotx/Repo/git/ycmd/third_party/requests/requests/api.py", line 53, in request
    return session.request(method=method, url=url, **kwargs)
  File "/home/sixshotx/Repo/git/ycmd/third_party/requests/requests/sessions.py", line 468, in request
    resp = self.send(prep, **send_kwargs)
  File "/home/sixshotx/Repo/git/ycmd/third_party/requests/requests/sessions.py", line 576, in send
    r = adapter.send(request, **kwargs)
  File "/home/sixshotx/Repo/git/ycmd/third_party/requests/requests/adapters.py", line 437, in send
    raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPConnectionPool(host='127.0.0.1', port=33695): Max retries exceeded with url: /ready (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x7ff1902a9358>: Failed to establish a new connection: [Errno 111] Connection refused',))
2016-09-23 16:04:02,821 - INFO - Received event notification
2016-09-23 16:04:02,821 - DEBUG - Event name: BufferVisit
2016-09-23 16:04:02,822 - INFO - Received event notification
2016-09-23 16:04:02,822 - DEBUG - Event name: FileReadyToParse
2016-09-23 16:04:02,822 - INFO - Adding buffer identifiers for file: /home/sixshotx/tmp/python/x.py
2016-09-23 16:04:04,855 - INFO - Received event notification
2016-09-23 16:04:04,855 - DEBUG - Event name: FileReadyToParse
2016-09-23 16:04:04,855 - INFO - Adding buffer identifiers for file: /home/sixshotx/tmp/python/x.py
2016-09-23 16:04:16,839 - INFO - Received event notification
2016-09-23 16:04:16,839 - DEBUG - Event name: FileReadyToParse
2016-09-23 16:04:16,839 - INFO - Adding buffer identifiers for file: /home/sixshotx/tmp/python/x.py

[TheBB]

I see the same, but the error message indicates that ycmd can't connect to jedi. Did you report to ycmd?

[sixshotx]

Not yet. I think the problem might be within either spacemacs or emacs-ycmd. I have no problem connecting jedi using vim-youcompleteme with the same ycmd engine though.

[TheBB]

Then did you try reproducing with just emacs-ycmd?

[deb0ch]

emacs-ycmd is a bit outdated sometimes, so it is possible that it is coming from there.

The example I am refering to is if you try to call ycmd-restart-semantic-server you get a "usage" error message, saying that the command is not supported:

REQUEST [error] Error (error) while connecting to http://127.0.0.1:44286/run_completer_command.
Supported commands are:
ClearCompilationFlagCache
FixIt
GetDoc
GetDocQuick
GetParent
GetType
GoTo
GoToDeclaration
GoToDefinition
GoToImprecise
GoToInclude
See the docs for information on what they do.

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