Spyder fails when connecting to an existing kernel

Description

What steps will reproduce the problem?

I tried to connect remote Spyder kernel to the Spyder console at local PC. Here are the steps I took.

I run the command below at a remote server.

python -m spyder_kernels.console - matplotlib=‘inline’ --ip=127.0.0.1 -f=./remotemachine.json

I made sure all the ports in the remotemachine.json are tunneled to the local machine.

I also copied the remotemachine.json to the local machine.

Then at the Spyder console in the local PC, I selected Consoles --> Connect to an existing kernel.

In the dialog box, I selected the remotemachine.json file I copied in the local machine and pushed “OK”.

Then the Spyder immediately reports an error. The error message is as below.

At both the remote and the local machines, the Spyder and the Spyder-Kernel versions are exactly the same.

spyder : 5.1.5 spyder-kernels : 2.1.3

Any idea how I can make it run?

---

Traceback (most recent call last): File “C:\Users\funaya\Anaconda3\envs\e3nn\lib\site-packages\spyder\plugins\ipythonconsole\plugin.py”, line 1105, in create_client_for_kernel self._create_client_for_kernel(connection_file, hostname, sshkey, File “C:\Users\funaya\Anaconda3\envs\e3nn\lib\site-packages\spyder\plugins\ipythonconsole\plugin.py”, line 1935, in _create_client_for_kernel shellwidget.check_spyder_kernel() File “C:\Users\funaya\Anaconda3\envs\e3nn\lib\site-packages\spyder\plugins\ipythonconsole\widgets\shell.py”, line 266, in check_spyder_kernel self.silent_exec_method(code) File “C:\Users\funaya\Anaconda3\envs\e3nn\lib\site-packages\spyder\plugins\ipythonconsole\widgets\shell.py”, line 667, in silent_exec_method self._request_info[‘execute’][msg_id] = self._ExecutionRequest(msg_id, TypeError: <lambda>() missing 1 required positional argument: ‘hidden’

Traceback

Traceback (most recent call last):
  File "C:\Users\funaya\Anaconda3\envs\e3nn\lib\site-packages\spyder\plugins\ipythonconsole\plugin.py", line 1105, in create_client_for_kernel
    self._create_client_for_kernel(connection_file, hostname, sshkey,
  File "C:\Users\funaya\Anaconda3\envs\e3nn\lib\site-packages\spyder\plugins\ipythonconsole\plugin.py", line 1935, in _create_client_for_kernel
    shellwidget.check_spyder_kernel()
  File "C:\Users\funaya\Anaconda3\envs\e3nn\lib\site-packages\spyder\plugins\ipythonconsole\widgets\shell.py", line 266, in check_spyder_kernel
    self.silent_exec_method(code)
  File "C:\Users\funaya\Anaconda3\envs\e3nn\lib\site-packages\spyder\plugins\ipythonconsole\widgets\shell.py", line 667, in silent_exec_method
    self._request_info['execute'][msg_id] = self._ExecutionRequest(msg_id,
TypeError: <lambda>() missing 1 required positional argument: 'hidden'

Versions

• Spyder version: 5.1.5
• Python version: 3.9.12
• Qt version: 5.9.7
• PyQt5 version: 5.9.2
• Operating System: Windows 10

Dependencies

# Mandatory:
atomicwrites >=1.2.0          :  1.4.0 (OK)
chardet >=2.0.0               :  4.0.0 (OK)
cloudpickle >=0.5.0           :  2.0.0 (OK)
cookiecutter >=1.6.0          :  1.7.3 (OK)
diff_match_patch >=20181111   :  20200713 (OK)
intervaltree >=3.0.2          :  3.1.0 (OK)
IPython >=7.6.0               :  8.4.0 (OK)
jedi >=0.17.2;<0.19.0         :  0.18.1 (OK)
jsonschema >=3.2.0            :  4.4.0 (OK)
keyring >=17.0.0              :  23.4.0 (OK)
nbconvert >=4.0               :  6.4.4 (OK)
numpydoc >=0.6.0              :  1.4.0 (OK)
paramiko >=2.4.0              :  2.8.1 (OK)
parso >=0.7.0;<0.9.0          :  0.8.3 (OK)
pexpect >=4.4.0               :  4.8.0 (OK)
pickleshare >=0.4             :  0.7.5 (OK)
psutil >=5.3                  :  5.9.0 (OK)
pygments >=2.0                :  2.11.2 (OK)
pylint >=2.5.0;<2.10.0        :  2.9.6 (OK)
pyls_spyder >=0.4.0           :  0.4.0 (OK)
pylsp >=1.2.2;<1.3.0          :  1.2.4 (OK)
pylsp_black >=1.0.0           :  None (OK)
qdarkstyle =3.0.2             :  3.0.2 (OK)
qstylizer >=0.1.10            :  0.1.10 (OK)
qtawesome >=1.0.2             :  1.0.3 (OK)
qtconsole >=5.1.0             :  5.3.1 (OK)
qtpy >=1.5.0                  :  2.0.1 (OK)
rtree >=0.9.7                 :  0.9.7 (OK)
setuptools >=49.6.0           :  61.2.0 (OK)
sphinx >=0.6.6                :  5.0.2 (OK)
spyder_kernels >=2.1.1;<2.2.0 :  2.1.3 (OK)
textdistance >=4.2.0          :  4.2.1 (OK)
three_merge >=0.1.1           :  0.1.1 (OK)
watchdog >=0.10.3             :  2.1.6 (OK)
zmq >=17                      :  23.2.0 (OK)

# Optional:
cython >=0.21                 :  None (OK)
matplotlib >=2.0.0            :  None (OK)
numpy >=1.7                   :  None (OK)
pandas >=1.1.1                :  None (OK)
scipy >=0.17.0                :  None (OK)
sympy >=0.7.3                 :  None (OK)

[KoichiFunaya]

Thank you for the clarification. I now understood clearly. Of course I have to search for the latest updates at conda-forge.

Thanks again!

[KoichiFunaya]

Thanks. I will try and see if it works as you suggested.