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Unable to start Jupyter on Mac (Silicon) Monterey #8295

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DonJayamanne opened this issue Nov 17, 2021 · 3 comments
Closed

Unable to start Jupyter on Mac (Silicon) Monterey #8295

DonJayamanne opened this issue Nov 17, 2021 · 3 comments
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bug Issue identified by VS Code Team member as probable bug notebook-kernel Kernels issues (start/restart/switch/execution, install ipykernel) verified Verification succeeded
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October 2021

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DonJayamanne commented Nov 17, 2021 •
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OS: Mac Silicon (M1) Monterey

Problem

  • Unable to run a cell as Jupyter fails to start

Logs

File "/opt/homebrew/lib/python3.9/site-packages/traitlets/config/loader.py", line 933, in __call__
namespace._flags.append(self.flag)
AttributeError: 'Namespace' object has no attribute '_flags'

We believe this could resolved by updating traitlets to the latest version as follows python -m pip install 'traitlets>=5.1.1.

More information on this can be found here https://discourse.jupyter.org/t/attributeerror-namespace-object-has-no-attribute-flags-when-running-jupyter-kernelspec-list-json/11690
@DonJayamanne DonJayamanne added the bug Issue identified by VS Code Team member as probable bug label Nov 17, 2021
@DonJayamanne DonJayamanne changed the title Unable to start Jupyter on Moterey Unable to start Jupyter on Mac (Silicon) Moterey Nov 17, 2021
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DonJayamanne commented Nov 17, 2021 •
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Work around:

  • Update traitlets to the latest version as follows python -m pip install 'traitlets>=5.1.1
  • Please ensure you install traitlets into the Python enviornment used to start Jupyter
  • To determine the Python environment used to start Jupyter, please do the following
    • Select the command 'Jupyter: Select Interpreter to start Jupyter Server`
    • In the quickpick the currently selected interrpeter will be displayed in the intput box as a placeholder.
    • Please install traitlets into this environment

@DonJayamanne DonJayamanne added kernel-crash notebook-kernel Kernels issues (start/restart/switch/execution, install ipykernel) labels Nov 17, 2021
@DonJayamanne DonJayamanne self-assigned this Nov 17, 2021
@DonJayamanne DonJayamanne pinned this issue Nov 18, 2021
@DonJayamanne DonJayamanne changed the title Unable to start Jupyter on Mac (Silicon) Moterey Unable to start Jupyter on Mac (Silicon) Monterey Nov 18, 2021
@greazer greazer added this to the November 2021 milestone Nov 18, 2021
@DonJayamanne DonJayamanne mentioned this issue Nov 18, 2021
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@DonJayamanne DonJayamanne mentioned this issue Nov 24, 2021
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@DonJayamanne
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Please test using this test plan #8357

@rchiodo rchiodo added the verified Verification succeeded label Dec 3, 2021
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rchiodo commented Dec 3, 2021

/verified with testplan

@greazer greazer unpinned this issue Dec 15, 2021
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bug Issue identified by VS Code Team member as probable bug notebook-kernel Kernels issues (start/restart/switch/execution, install ipykernel) verified Verification succeeded
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