__init__() got an unexpected keyword argument 'source'

[slucx]

Summary

Error Message

__init__() got an unexpected keyword argument 'source'

Traceback (most recent call last):
  File "/Users/slucx/.emacs.d/elpa-27.1/elpy-1.35.0/elpy/jedibackend.py", line 368, in run_with_debug
    script = jedi.Script(*args, **kwargs)
TypeError: __init__() got an unexpected keyword argument 'source'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/slucx/.emacs.d/elpa-27.1/elpy-1.35.0/elpy/jedibackend.py", line 401, in run_with_debug
    script = jedi.Script(*args, **kwargs)
TypeError: __init__() got an unexpected keyword argument 'source'

Jedi Debug Information

Jedi did not emit any debug info.

Reproduction:

import jedi

source = '''\
import zmq
import time
import os

context = zmq.Context()
socket = context.socket(zmq.REP)
socket.bind('tcp://126.0.0.1:5555')

while True:
    msg = socket.recv()
    print(f'received request: {msg}')
    time.sleep(1)
    socket.send(b'world')
'''

script = jedi.Script(source=source, line=14, column=0, path='/Users/slucx/scratch/tzmq/serv.py', encoding='utf-8', environment=None)
script.goto_definitions()

My configuration

mac osx 10.13.6

Result of (elpy-config)

Emacs.............: 27.1
Elpy..............: 1.35.0
Virtualenv........: custom (/Users/slucx/.venv/custom)
Interactive Python: python 3.9.0 (/Users/slucx/.venv/custom/bin/python)
RPC virtualenv....: custom (/Users/slucx/.venv/custom)
 Python...........: python 3.9.0 (/Users/slucx/.venv/custom/bin/python)
 Jedi.............: 0.18.0
 Rope.............: Not found (0.18.0 available)
 Autopep8.........: 1.5.4
 Yapf.............: Not found (0.30.0 available)
 Black............: Not found (20.8b1 available)
Syntax checker....: flake8 (/Users/slucx/.venv/custom/bin/flake8)

Elpy configuration in my init.el

;;; Code:
(require-package 'elpy)

(defun py-workon (name)
  "Activate a virtual environment from $WORKON_HOME.

If the virtual environment NAME is already active, this function
does not try to reactivate the environment."
  (interactive
   (list
    (completing-read "Work on: " (pyvenv-virtualenv-list)
                     nil t nil 'pyvenv-workon-history nil nil)))
  (pyvenv-workon name)
  (setq elpy-rpc-virtualenv-path
        (expand-file-name name (getenv "WORKON_HOME"))))

(with-eval-after-load 'python
  ;; jedi flake8 autopep8 importmagic
  (unless (or (is-buffer-file-temp)
              (not buffer-file-name)
              ;; embed python code in org file
              (string= (file-name-extension buffer-file-name) "org"))
    (elpy-enable)
    (setenv  "WORKON_HOME" "~/.venv")
    (py-workon "custom")
    ;; (setq elpy-rpc-virtualenv-path)
    ;; If you don't like any hint or error report from elpy,
    ;; set `elpy-disable-backend-error-display' to t.
    (setq elpy-disable-backend-error-display nil))
  ;; emacs 24.4+
  (setq electric-indent-chars (delq ?: electric-indent-chars)))

(provide 'init-python)
;;; init-python ends here

[lesteral]

@slucx (and any others who may run into this): I recently encountered a similar issue, using jedi 0.18.1 (vs. 0.18.0 which you were using in 2020). I had installed elpy (1.35.0 - same as you) from https://stable.melpa.org/#/elpy After updating elpy to latest (20220627.1416) at https://melpa.org/#/elpy I no longer encounter the issue.

I was clued by #1964 (thanks @max0x7ba)

[max0x7ba]

I switched to using lsp instead, it works marvelously.