allefeld
commented
3 years ago Not sure whether you guys did something or this is just random, but I just noticed that my problem doesn't seem to happen anymore. At least when I just now created a new notebook, the 3.8.8 kernel was automatically selected. As far as I can tell, the only thing changed is that the Python extension was updated to 2021.5.0.
ma137
DonJayamanne
Environment data
Detailed VS Code version information:
Expected behaviour
Start automatically the IPython kernel for the trusted Python 3 notebook while opening the notebook. Run cells after clicking on the "Run cell" button.
(Before updating VS Code everything worked as expected.)
Actual behaviour
Error message "Python 2.7.18 64-bit requires ipykernel to be installed." appears at startup and each time one tries to run a cell. Actually, the cells do not get executed until one closes the error message by clicking on the "x".
Steps to reproduce:
jupyter notebookin a terminal. Open its web interface in a browser.1+1.Here is a part of the source of one of my notebooks. As far as I know, these metadata show clearly that it is a Python 3 notebook.
Logs
Output for
Jupyterin theOutputpanel (View→Output, change the drop-down the upper-right of theOutputpanel toJupyter)> /usr/bin/python ~/.vscode/extensions/ms-toolsai.jupyter-2021.2.576440691/pythonFiles/pyvsc-run-isolated.py -c "import ipykernel" > /usr/bin/python ~/.vscode/extensions/ms-toolsai.jupyter-2021.2.576440691/pythonFiles/pyvsc-run-isolated.py -c "import ipykernel" Error 2021-02-24 20:00:40: Find kernel spec, Class name = L, completed in 40748ms, has a falsy return value, Arg 1:, Arg 2: {"kernelspec":{"display_name":"Python 3","language":"python","name":"python3"},"language_info":{"codemirror_mode":{"name":"ipython","version":3},"file_extension":".py","mimetype":"text/x-python","name":"python","nbconvert_exporter":"python","pygments_lexer":"ipython3","version":"3.8.5"}}, Arg 3: undefined, Arg 4: undefined, Return Value: undefined [a [Error]: IPyKernel not installed into interpreter Python 2.7.18 64-bit:/usr/bin/python
at L.installDependenciesIntoInterpreter (/home/ma/.vscode/extensions/ms-toolsai.jupyter-2021.2.576440691/out/client/extension.js:1:223195)
at processTicksAndRejections (internal/process/task_queues.js:97:5)
at async L.getKernelForLocalRawConnection (/home/ma/.vscode/extensions/ms-toolsai.jupyter-2021.2.576440691/out/client/extension.js:1:222022)] {
category: 'noipykernel',
reason: 1
}
Error 2021-02-24 20:00:40: Get preferred local kernel connection, Class name = L, completed in 40749ms, has a falsy return value [a [Error]: IPyKernel not installed into interpreter Python 2.7.18 64-bit:/usr/bin/python
at L.installDependenciesIntoInterpreter (/home/ma/.vscode/extensions/ms-toolsai.jupyter-2021.2.576440691/out/client/extension.js:1:223195)
at processTicksAndRejections (internal/process/task_queues.js:97:5)
at async L.getKernelForLocalRawConnection (/home/ma/.vscode/extensions/ms-toolsai.jupyter-2021.2.576440691/out/client/extension.js:1:222022)] {
category: 'noipykernel',
reason: 1
}
Error 2021-02-24 20:00:40: Failed to determine if a notebook is active for the current editor [a [Error]: IPyKernel not installed into interpreter Python 2.7.18 64-bit:/usr/bin/python
at L.installDependenciesIntoInterpreter (/home/ma/.vscode/extensions/ms-toolsai.jupyter-2021.2.576440691/out/client/extension.js:1:223195)
at processTicksAndRejections (internal/process/task_queues.js:97:5)
at async L.getKernelForLocalRawConnection (/home/ma/.vscode/extensions/ms-toolsai.jupyter-2021.2.576440691/out/client/extension.js:1:222022)] {
category: 'noipykernel',
reason: 1
}
Error 2021-02-24 20:00:40: Failed to determine if a notebook is active for the current editor [a [Error]: IPyKernel not installed into interpreter Python 2.7.18 64-bit:/usr/bin/python
at L.installDependenciesIntoInterpreter (/home/ma/.vscode/extensions/ms-toolsai.jupyter-2021.2.576440691/out/client/extension.js:1:223195)
at processTicksAndRejections (internal/process/task_queues.js:97:5)
at async L.getKernelForLocalRawConnection (/home/ma/.vscode/extensions/ms-toolsai.jupyter-2021.2.576440691/out/client/extension.js:1:222022)] {
category: 'noipykernel',
reason: 1
}
Error 2021-02-24 20:00:40: DataScience Error [a [Error]: IPyKernel not installed into interpreter Python 2.7.18 64-bit:/usr/bin/python
at L.installDependenciesIntoInterpreter (/home/ma/.vscode/extensions/ms-toolsai.jupyter-2021.2.576440691/out/client/extension.js:1:223195)
at processTicksAndRejections (internal/process/task_queues.js:97:5)
at async L.getKernelForLocalRawConnection (/home/ma/.vscode/extensions/ms-toolsai.jupyter-2021.2.576440691/out/client/extension.js:1:222022)] {
category: 'noipykernel',
reason: 1
}
}
Error 2021-02-24 20:01:20: Exception attempting to start notebook: [a [Error]: IPyKernel not installed into interpreter Python 2.7.18 64-bit:/usr/bin/python
at L.installDependenciesIntoInterpreter (/home/ma/.vscode/extensions/ms-toolsai.jupyter-2021.2.576440691/out/client/extension.js:1:223195)
at processTicksAndRejections (internal/process/task_queues.js:97:5)
at async L.getKernelForLocalRawConnection (/home/ma/.vscode/extensions/ms-toolsai.jupyter-2021.2.576440691/out/client/extension.js:1:222022)] {
category: 'noipykernel',
reason: 1
}
Error 2021-02-24 20:01:20: DataScience Error [a [Error]: IPyKernel not installed into interpreter Python 2.7.18 64-bit:/usr/bin/python
at L.installDependenciesIntoInterpreter (/home/ma/.vscode/extensions/ms-toolsai.jupyter-2021.2.576440691/out/client/extension.js:1:223195)
at processTicksAndRejections (internal/process/task_queues.js:97:5)
at async L.getKernelForLocalRawConnection (/home/ma/.vscode/extensions/ms-toolsai.jupyter-2021.2.576440691/out/client/extension.js:1:222022)] {
category: 'noipykernel',
reason: 1
}
Possible origin of the problem
This output indicates that the problem might be that the extension executes
/usr/bin/pythonalso for Python 3 notebooks, while/usr/bin/pythonis actually Python 2 on Ubuntu 20.04. In the Ubuntu 20.04 release notes the following information can be found:Screenshot