"An error ocurred while starting the kernel" Error

[denizozdemir]

Issue Report Checklist

• [ ] Searched the issues page for similar reports
• [ ] Read the relevant sections of the Spyder Troubleshooting Guide and followed its advice
• [ ] Reproduced the issue after updating with conda update spyder (or pip, if not using Anaconda)
• [ ] Could not reproduce inside jupyter qtconsole (if console-related)
• [ ] Tried basic troubleshooting (if a bug/error)
  • [ ] Restarted Spyder
  • [ ] Reset preferences with spyder --reset
  • [ ] Reinstalled the latest version of Anaconda
  • [ ] Tried the other applicable steps from the Troubleshooting Guide
• [ ] Completed the Problem Description, Steps to Reproduce and Version sections below

Problem Description

I've installed python 3.12.5 and Sypder 5.5.5. I've changed python interpreter of Sypder (defult python version was 3.8 and now it it 3.12). When I perfomed that change there is a error message in console. I've installed spyder-kernels 2.5.2 as suggested. However, still same error appers in the console. I've opened and closed sypder. What should i do?

What steps reproduce the problem?

1. Changing python interpreter
2. Nessary spyder-kernel version is installed
3. Error does not solved

What is the expected output? What do you see instead?

I was expecting this error go away but it does not.

Paste Traceback/Error Below (if applicable)

An error ocurred while starting the kernel
The Python environment or installation whose interpreter is located at
    C:\Program Files\Python312\python.exe
doesn't have the spyder‑kernels module or the right version of it installed (>= 2.5.0 and < 2.6.0). Without this module is not possible for Spyder to create a console for you.

You can install it by activating your environment first (if necessary) and then running in a system terminal:
    conda install spyder-kernels=2.5
or
    pip install spyder-kernels==2.5.*

Versions

• Spyder version: 5.5.5
• Python version: 3.12.5
• Qt version:
• PyQt version:
• Operating System name/version: Windows 10

Dependencies

Mandatory:

atomicwrites >=1.2.0 : 1.4.1 (OK) chardet >=2.0.0 : 5.2.0 (OK) cloudpickle >=0.5.0 : 3.0.0 (OK) cookiecutter >=1.6.0 : 2.6.0 (OK) diff_match_patch >=20181111 : 20230430 (OK) intervaltree : None (OK) IPython >=8.12.2,<8.13.0 : 8.12.3 (OK) jedi >=0.17.2,<0.20.0 : 0.19.1 (OK) jellyfish >=0.7 : 1.0.4 (OK) jsonschema >=3.2.0 : 4.22.0 (OK) keyring >=17.0.0 : 25.2.1 (OK) nbconvert >=4.0 : 7.16.4 (OK) numpydoc >=0.6.0 : 1.7.0 (OK) paramiko >=2.4.0 : 3.4.0 (OK) parso >=0.7.0,<0.9.0 : 0.8.4 (OK) pexpect >=4.4.0 : 4.9.0 (OK) pickleshare >=0.4 : 0.7.5 (OK) psutil >=5.3 : 5.9.8 (OK) pygments >=2.0 : 2.18.0 (OK) pylint >=3.1,<4 : 3.2.3 (OK) pylint_venv >=3.0.2 : 3.0.3 (OK) pyls_spyder >=0.4.0 : 0.4.0 (OK) pylsp >=1.11.0,<1.12.0 : 1.11.0 (OK) pylsp_black >=2.0.0,<3.0.0 : 2.0.0 (OK) qdarkstyle >=3.2.0,<3.3.0 : 3.2.3 (OK) qstylizer >=0.2.2 : 0.2.3 (OK) qtawesome >=1.3.1,<1.4.0 : 1.3.1 (OK) qtconsole >=5.5.1,<5.6.0 : 5.5.2 (OK) qtpy >=2.1.0 : 2.4.1 (OK) rtree >=0.9.7 : 1.2.0 (OK) setuptools >=49.6.0 : 70.0.0 (OK) sphinx >=0.6.6 : 7.1.2 (OK) spyder_kernels >=2.5.2,<2.6.0 : 2.5.2 (OK) textdistance >=4.2.0 : 4.6.2 (OK) three_merge >=0.1.1 : 0.1.1 (OK) watchdog : 4.0.1 (OK) zmq >=24.0.0 : 26.0.3 (OK)

Optional:

cython >=0.21 : 3.0.10 (OK) matplotlib >=3.0.0 : 3.7.5 (OK) numpy >=1.7 : 1.24.4 (OK) pandas >=1.1.1 : 2.0.3 (OK) scipy >=0.17.0 : 1.10.1 (OK) sympy >=0.7.3 : 1.12.1 (OK)

[dalthviz]

Hi @denizozdemir thank you for the feedback! Did you install spyder-kernels for you global Python installation without using an env right? If that is the case, maybe this is related with https://github.com/spyder-ide/spyder/issues/20968

Let us know if the info above helps!

[ccordoba12]

Closing as a duplicate of #20698.