"Go to definition" causes error in Python 3.6

Description

What steps will reproduce the problem?

Any use of “Go to definition” in Windows with Spyder 4.1.5 raises this error.

Traceback

  File "c:\ProgramData\Anaconda3\lib\site-packages\spyder\plugins\editor\widgets\codeeditor.py", line 1440, in handle_go_to_definition
    def_range = position['range']
TypeError: list indices must be integers or slices, not str

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "c:\ProgramData\Anaconda3\lib\logging\__init__.py", line 992, in emit
    msg = self.format(record)
  File "c:\ProgramData\Anaconda3\lib\logging\__init__.py", line 838, in format
    return fmt.format(record)
  File "c:\ProgramData\Anaconda3\lib\logging\__init__.py", line 575, in format
    record.message = record.getMessage()
  File "c:\ProgramData\Anaconda3\lib\logging\__init__.py", line 338, in getMessage
    msg = msg % self.args
ValueError: incomplete format
Call stack:
  File "c:\ProgramData\Anaconda3\lib\site-packages\spyder\app\start.py", line 223, in <module>
    main()
  File "c:\ProgramData\Anaconda3\lib\site-packages\spyder\app\start.py", line 219, in main
    mainwindow.main()
  File "c:\ProgramData\Anaconda3\lib\site-packages\spyder\app\mainwindow.py", line 3651, in main
    mainwindow = run_spyder(app, options, args)
  File "c:\ProgramData\Anaconda3\lib\site-packages\spyder\app\mainwindow.py", line 3567, in run_spyder
    app.exec_()
  File "c:\ProgramData\Anaconda3\lib\site-packages\spyder\plugins\completion\languageserver\client.py", line 497, in on_msg_received
    self.req_reply[req_id](None, {'params': []})
  File "c:\ProgramData\Anaconda3\lib\site-packages\spyder\plugins\completion\languageserver\plugin.py", line 549, in receive_response
    self.COMPLETION_CLIENT_NAME, req_id, response)
  File "c:\ProgramData\Anaconda3\lib\site-packages\spyder\plugins\completion\plugin.py", line 123, in receive_response
    self.howto_send_to_codeeditor(req_id)
  File "c:\ProgramData\Anaconda3\lib\site-packages\spyder\plugins\completion\plugin.py", line 171, in howto_send_to_codeeditor
    self.skip_and_send_to_codeeditor(req_id)
  File "c:\ProgramData\Anaconda3\lib\site-packages\spyder\plugins\completion\plugin.py", line 205, in skip_and_send_to_codeeditor
    self.gather_and_send_to_codeeditor(request_responses)
  File "c:\ProgramData\Anaconda3\lib\site-packages\spyder\plugins\completion\plugin.py", line 273, in gather_and_send_to_codeeditor
    response_instance.handle_response(req_type, responses)
  File "c:\ProgramData\Anaconda3\lib\site-packages\spyder\plugins\editor\widgets\codeeditor.py", line 1019, in handle_response
    handler(params)
  File "c:\ProgramData\Anaconda3\lib\site-packages\spyder\plugins\editor\widgets\codeeditor.py", line 1457, in handle_go_to_definition
    "Error when processing go to definition")
  File "c:\ProgramData\Anaconda3\lib\site-packages\spyder\plugins\editor\widgets\codeeditor.py", line 1050, in log_lsp_handle_errors
    logger.error('%', 1, stack_info=True)
Message: '%'
Arguments: (1,)

Versions

• Spyder version: 4.1.5
• Python version: 3.6.4
• Qt version: 5.9.6
• PyQt5 version: 5.9.2
• Operating System: Windows 10

Dependencies

# Mandatory:
atomicwrites >=1.2.0           :  1.4.0 (OK)
chardet >=2.0.0                :  3.0.4 (OK)
cloudpickle >=0.5.0            :  0.5.2 (OK)
diff_match_patch >=20181111    :  20200713 (OK)
intervaltree                   :  None (OK)
IPython >=4.0                  :  7.16.1 (OK)
jedi =0.17.1                   :  0.17.1 (OK)
nbconvert >=4.0                :  5.6.1 (OK)
numpydoc >=0.6.0               :  0.7.0 (OK)
paramiko >=2.4.0               :  2.4.2 (OK)
parso =0.7.0                   :  0.7.0 (OK)
pexpect >=4.4.0                :  4.8.0 (OK)
pickleshare >=0.4              :  0.7.4 (OK)
psutil >=5.3                   :  5.7.2 (OK)
pygments >=2.0                 :  2.2.0 (OK)
pylint >=1.0                   :  1.8.2 (OK)
pyls >=0.34.0;<1.0.0           :  0.34.1 (OK)
qdarkstyle >=2.8               :  2.8.1 (OK)
qtawesome >=0.5.7              :  0.7.2 (OK)
qtconsole >=4.6.0              :  4.7.6 (OK)
qtpy >=1.5.0                   :  1.9.0 (OK)
rtree >=0.8.3                  :  0.9.4 (OK)
sphinx >=0.6.6                 :  3.2.1 (OK)
spyder_kernels >=1.9.4;<1.10.0 :  1.9.4 (OK)
watchdog                       :  None (OK)
zmq >=17                       :  19.0.1 (OK)

# Optional:
cython >=0.21                  :  0.27.3 (OK)
matplotlib >=2.0.0             :  2.2.2 (OK)
numpy >=1.7                    :  1.18.1 (OK)
pandas >=0.13.1                :  0.24.2 (OK)
scipy >=0.17.0                 :  1.4.1 (OK)
sympy >=0.7.3                  :  1.1.1 (OK)

[ccordoba12]

Python version: 3.6.4

Maybe the issue is with Python 3.6.

@dalthviz, could you try to reproduce this on Windows?

[dalthviz]

Checking a little bit more seems like an update to jedi 0.17.2 fixes the issues (seems like jedi 0.17.1 has an issue when running under Python 3.6):

import jedi
source = '''
import json
json.lo'''
script = jedi.Script(source, path='example.py')
completions = script.complete(3, len('json.lo'))
Traceback (most recent call last):

  File "C:\Users\Daniel\Anaconda3\envs\py36\lib\site-packages\jedi\inference\compiled\subprocess\__init__.py", line 261, in _send
    is_exception, traceback, result = pickle_load(self._get_process().stdout)

  File "C:\Users\Daniel\Anaconda3\envs\py36\lib\site-packages\jedi\_compatibility.py", line 396, in pickle_load
    return pickle.load(file, encoding='bytes')

EOFError: Ran out of input


During handling of the above exception, another exception occurred:

Traceback (most recent call last):

  File "C:\Users\Daniel\Anaconda3\envs\py36\lib\site-packages\jedi\api\environment.py", line 75, in _get_subprocess
    info = self._subprocess._send(None, _get_info)

  File "C:\Users\Daniel\Anaconda3\envs\py36\lib\site-packages\jedi\inference\compiled\subprocess\__init__.py", line 273, in _send
    stderr,

InternalError: The subprocess C:\Users\Daniel\Anaconda3\envs\py36\python.exe has crashed (EOFError('Ran out of input',), stderr=).


During handling of the above exception, another exception occurred:

Traceback (most recent call last):

  File "<ipython-input-1-ef826d01cd16>", line 5, in <module>
    script = jedi.Script(source, path='example.py')

  File "C:\Users\Daniel\Anaconda3\envs\py36\lib\site-packages\jedi\api\__init__.py", line 185, in __init__
    project, environment=environment, script_path=self.path

  File "C:\Users\Daniel\Anaconda3\envs\py36\lib\site-packages\jedi\inference\__init__.py", line 90, in __init__
    self.compiled_subprocess = environment.get_inference_state_subprocess(self)

  File "C:\Users\Daniel\Anaconda3\envs\py36\lib\site-packages\jedi\api\environment.py", line 114, in get_inference_state_subprocess
    return InferenceStateSubprocess(inference_state, self._get_subprocess())

  File "C:\Users\Daniel\Anaconda3\envs\py36\lib\site-packages\jedi\api\environment.py", line 80, in _get_subprocess
    exc))

InvalidPythonEnvironment: Could not get version information for 'C:\\Users\\Daniel\\Anaconda3\\envs\\py36\\python.exe': InternalError("The subprocess C:\\Users\\Daniel\\Anaconda3\\envs\\py36\\python.exe has crashed (EOFError('Ran out of input',), stderr=).",)

I think the issue is related with davidhalter/jedi#1627

With Jedi 0.17.2 everything (as far as I tested) works as expected. Maybe we need to change the Jedi dependency version from =0.17.1 to = 0.17.2 ?