TypeError when hovering in the editor

Description

What steps will reproduce the problem?

1. go to anaconda
2. open spyder console
3. go to new file to add

Traceback

  File "C:\Users\990112578\Anaconda3\lib\site-packages\spyder\plugins\editor\widgets\codeeditor.py", line 1295, in handle_hover_response
    self._request_hover_clicked)
TypeError: CodeEditor.sig_display_object_info[str, bool].emit(): argument 1 has unexpected type 'list'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\990112578\Anaconda3\lib\logging\__init__.py", line 1025, in emit
    msg = self.format(record)
  File "C:\Users\990112578\Anaconda3\lib\logging\__init__.py", line 869, in format
    return fmt.format(record)
  File "C:\Users\990112578\Anaconda3\lib\logging\__init__.py", line 608, in format
    record.message = record.getMessage()
  File "C:\Users\990112578\Anaconda3\lib\logging\__init__.py", line 369, in getMessage
    msg = msg % self.args
ValueError: incomplete format
Call stack:
  File "C:\Users\990112578\Anaconda3\Scripts\spyder-script.py", line 10, in <module>
    sys.exit(main())
  File "C:\Users\990112578\Anaconda3\lib\site-packages\spyder\app\start.py", line 205, in main
    mainwindow.main()
  File "C:\Users\990112578\Anaconda3\lib\site-packages\spyder\app\mainwindow.py", line 3718, in main
    mainwindow = run_spyder(app, options, args)
  File "C:\Users\990112578\Anaconda3\lib\site-packages\spyder\app\mainwindow.py", line 3600, in run_spyder
    app.exec_()
  File "C:\Users\990112578\Anaconda3\lib\site-packages\spyder\plugins\completion\languageserver\client.py", line 360, in on_msg_received
    self.req_reply[req_id](None, {'params': []})
  File "C:\Users\990112578\Anaconda3\lib\site-packages\spyder\plugins\completion\languageserver\plugin.py", line 302, in receive_response
    self.COMPLETION_CLIENT_NAME, req_id, response)
  File "C:\Users\990112578\Anaconda3\lib\site-packages\spyder\plugins\completion\plugin.py", line 120, in receive_response
    self._maybe_send_locked(req_id)
  File "C:\Users\990112578\Anaconda3\lib\site-packages\spyder\plugins\completion\plugin.py", line 161, in _maybe_send_locked
    send()
  File "C:\Users\990112578\Anaconda3\lib\site-packages\spyder\plugins\completion\plugin.py", line 143, in send
    self.gather_and_send(request_responses)
  File "C:\Users\990112578\Anaconda3\lib\site-packages\spyder\plugins\completion\plugin.py", line 212, in gather_and_send
    response_instance.handle_response(req_type, responses)
  File "C:\Users\990112578\Anaconda3\lib\site-packages\spyder\plugins\editor\widgets\codeeditor.py", line 940, in handle_response
    handler(params)
  File "C:\Users\990112578\Anaconda3\lib\site-packages\spyder\plugins\editor\widgets\codeeditor.py", line 1308, in handle_hover_response
    self.log_lsp_handle_errors("Error when processing hover")
  File "C:\Users\990112578\Anaconda3\lib\site-packages\spyder\plugins\editor\widgets\codeeditor.py", line 971, in log_lsp_handle_errors
    logger.error('%', 1, stack_info=True)
Message: '%'
Arguments: (1,)

Versions

• Spyder version: 4.0.1
• Python version: 3.7.6
• Qt version: 5.9.6
• PyQt5 version: 5.9.2
• Operating System: Windows 10

Dependencies

atomicwrites >=1.2.0         :  1.3.0 (OK)
chardet >=2.0.0              :  3.0.4 (OK)
cloudpickle >=0.5.0          :  1.3.0 (OK)
diff_match_patch >=20181111  :  20181111 (OK)
intervaltree                 :  None (OK)
IPython >=4.0                :  7.12.0 (OK)
jedi =0.14.1                 :  0.14.1 (OK)
nbconvert >=4.0              :  5.6.1 (OK)
numpydoc >=0.6.0             :  0.9.2 (OK)
pexpect >=4.4.0              :  4.8.0 (OK)
pickleshare >=0.4            :  0.7.5 (OK)
psutil >=0.3                 :  5.6.7 (OK)
pygments >=2.0               :  2.5.2 (OK)
pylint >=0.25                :  2.4.4 (OK)
pyls >=0.31.2;<0.32.0        :  0.31.7 (OK)
zmq >=17                     :  18.1.1 (OK)
qdarkstyle >=2.7             :  2.8 (OK)
qtawesome >=0.5.7            :  0.6.1 (OK)
qtconsole >=4.6.0            :  4.6.0 (OK)
qtpy >=1.5.0                 :  1.9.0 (OK)
rtree >=0.8.3                :  0.9.3 (OK)
sphinx >=0.6.6               :  2.4.0 (OK)
spyder_kernels >=1.8.1;<2.0.0:  1.8.1 (OK)
watchdog                     :  None (OK)
cython >=0.21                :  0.29.15 (OK)
matplotlib >=2.0.0           :  3.1.3 (OK)
numpy >=1.7                  :  1.18.1 (OK)
pandas >=0.13.1              :  1.0.1 (OK)
scipy >=0.17.0               :  1.4.1 (OK)
sympy >=0.7.3                :  1.5.1 (OK)

[DanCodigaMWRA]

Yes I created my environment using 3.7 this time instead of 3.6, no other changes, and found that so far I am not getting the hover hints error in Spyder 4.1.4. That’s progress for me. Thank you.

[DanCodigaMWRA]

“all our tests run in Python 3.7.”

This sure is good to know. Long ago I chose to stay at 3.6 because some of the packages I was using weren’t available yet in 3.7. It seems like it is time for me to go to 3.7 now. I will try creating my virtual environment using 3.7. If all goes well that may get me past these issues.

Thank you.