# \#ijulia

**URL:** https://discourse.julialang.org/tag/ijulia/399.md

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## [\[ANN\] IJulia 1.30.0](https://discourse.julialang.org/t/ann-ijulia-1-30-0/131811)

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**Author:** [@JamesNZ](https://discourse.julialang.org/u/JamesNZ)\
**Replies:** 4\
**Last updated:** [November 5, 2025, 5:25pm UTC](https://discourse.julialang.org/t/ann-ijulia-1-30-0/131811 "2025-11-05T17:25:37Z")

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Salutations \\o IJulia.jl has been around forever, but v1.30 was just been released and it’s quite a big one so I felt it deserves an announcement post. The main change in this version is that the internals have been co…

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## [Jupyter lab run\_kernel not working](https://discourse.julialang.org/t/jupyter-lab-run-kernel-not-working/132671)

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**Author:** [@cpf-work](https://discourse.julialang.org/u/cpf-work)\
**Replies:** 0\
**Last updated:** [September 26, 2025, 8:59am UTC](https://discourse.julialang.org/t/jupyter-lab-run-kernel-not-working/132671 "2025-09-26T08:59:43Z")

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I finally decided to update to 1.11 and juliaup. So I installed 1.11 with juliaup and got rid of the former 1.9 version I used. Ì’m on Windows 11. Everything seemed working except jupyterlab. I get the following in the t…

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## [What is the appropriate workflow for running Jupyter Notebookes in VSCode with IJulia](https://discourse.julialang.org/t/what-is-the-appropriate-workflow-for-running-jupyter-notebookes-in-vscode-with-ijulia/130806)

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**Author:** [@Torkel](https://discourse.julialang.org/u/Torkel)\
**Replies:** 8\
**Last updated:** [July 18, 2025, 8:53am UTC](https://discourse.julialang.org/t/what-is-the-appropriate-workflow-for-running-jupyter-notebookes-in-vscode-with-ijulia/130806 "2025-07-18T08:53:17Z")

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So it is technically possible to run a Julia Jupyter notebook in VSCode without getting IJulia involved. However, this tends to get very buggy and I have been told that I should still get IJulia involved. What is actual…

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## [Call original method when redefining a method. (Compact float printing in IJulia)](https://discourse.julialang.org/t/call-original-method-when-redefining-a-method-compact-float-printing-in-ijulia/74111)

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**Author:** [@tfiers](https://discourse.julialang.org/u/tfiers)\
**Replies:** 6\
**Last updated:** [April 6, 2025, 5:24am UTC](https://discourse.julialang.org/t/call-original-method-when-redefining-a-method-compact-float-printing-in-ijulia/74111 "2025-04-06T05:24:25Z")

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I want to print floats (and derived types such as Unitful.Quantity{Float64, …}) compactly in IJulia / the REPL. E.g. 0.1\*3 should be echoed as 0.3 and not 0.30000000000000004. Likewise, 0.1\*3mV should be 0.3 mV and not…

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## [IJulia not recognizing the \`\]\` repl package command](https://discourse.julialang.org/t/ijulia-not-recognizing-the-repl-package-command/122302)

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**Author:** [@erny123](https://discourse.julialang.org/u/erny123)\
**Replies:** 2\
**Last updated:** [November 5, 2024, 8:46pm UTC](https://discourse.julialang.org/t/ijulia-not-recognizing-the-repl-package-command/122302 "2024-11-05T20:46:47Z")

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Using Julia 1.11.1 and just loaded, built, and created a kernel with: installkernel("Julia (24 threads)", "--depwarn=no",env=Dict("JULIA\_NUM\_THREADS"=\>"24")) Haven’t had this issue before but when entering: \] activate . …

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## [Plots and IJulia format issues](https://discourse.julialang.org/t/plots-and-ijulia-format-issues/120712)

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**Author:** [@Simon\_Exner](https://discourse.julialang.org/u/Simon_Exner)\
**Replies:** 0\
**Last updated:** [September 30, 2024, 8:17am UTC](https://discourse.julialang.org/t/plots-and-ijulia-format-issues/120712 "2024-09-30T08:17:55Z")

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Hello, the following MWE of a julia-jupyter notebook (rename to .ipynb) shows a problem with plots: MWE1.ipynb.jl (224.5 KB) no matter the selected output format, the cell outputs an “image/png”, “image/svg+xml” and “…

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## [Connect REPL to jupyter notebook kernel](https://discourse.julialang.org/t/connect-repl-to-jupyter-notebook-kernel/86632)

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**Author:** [@daharn](https://discourse.julialang.org/u/daharn)\
**Replies:** 7\
**Last updated:** [September 21, 2024, 10:43am UTC](https://discourse.julialang.org/t/connect-repl-to-jupyter-notebook-kernel/86632 "2024-09-21T10:43:53Z")

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I am using the jupyter notebook Julia extension for VS Code and find it quite nice. However, when debugging my commands I often find myself reproducing my notebook steps in a script and then run them in a REPL to be able…

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## [Changing font size of code and output in julia jupyter notebook](https://discourse.julialang.org/t/changing-font-size-of-code-and-output-in-julia-jupyter-notebook/60584)

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**Author:** [@Sahil\_Goyal](https://discourse.julialang.org/u/Sahil_Goyal)\
**Replies:** 2\
**Last updated:** [August 23, 2024, 12:08am UTC](https://discourse.julialang.org/t/changing-font-size-of-code-and-output-in-julia-jupyter-notebook/60584 "2024-08-23T00:08:11Z")

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I find the default the size of julia jupyter notebook to be small. I need to increase the code and output size in the notebook. Please tell how to do that rather than doing Ctrl + ‘+’.

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## [Widen Jupyter Notebook](https://discourse.julialang.org/t/widen-jupyter-notebook/117811)

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**Author:** [@John\_Finseth](https://discourse.julialang.org/u/John_Finseth)\
**Replies:** 7\
**Last updated:** [August 5, 2024, 6:30pm UTC](https://discourse.julialang.org/t/widen-jupyter-notebook/117811 "2024-08-05T18:30:17Z")

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Hello, How can I widen cells in Jupyter notebook? I tried the fix from this post, but it doesn’t change anything about my notebook. using IJulia display("text/html", "\<style\>.container { width:100% !important; }\</style\>…

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## [Equivalent of \`nbconvert\` when using IJulia](https://discourse.julialang.org/t/equivalent-of-nbconvert-when-using-ijulia/113873)

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**Author:** [@keynescoefen](https://discourse.julialang.org/u/keynescoefen)\
**Replies:** 3\
**Last updated:** [May 5, 2024, 7:37pm UTC](https://discourse.julialang.org/t/equivalent-of-nbconvert-when-using-ijulia/113873 "2024-05-05T19:37:42Z")

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Hello! I was trying to run the command nbconvert --to pdf --TemplateExporter.exclude\_input=True my\_notebook.ipynb to avoid printing the code output of a cell as per the discussion here. Is there an equivalent in IJu…

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## [Directing Jupyter from IJulia to Homebrew installation of Julia](https://discourse.julialang.org/t/directing-jupyter-from-ijulia-to-homebrew-installation-of-julia/113872)

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**Author:** [@keynescoefen](https://discourse.julialang.org/u/keynescoefen)\
**Replies:** 2\
**Last updated:** [May 5, 2024, 5:01pm UTC](https://discourse.julialang.org/t/directing-jupyter-from-ijulia-to-homebrew-installation-of-julia/113872 "2024-05-05T17:01:40Z")

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Hello! I am trying to run a Jupyter notebook like so: using IJulia; notebook(detached=true) and find that my kernel for Julia 10 is not being recognized or located. On my system running which Julia gives me /usr/loc…

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## [Some notes on using IJulia (and nbextensions) as a Python noob](https://discourse.julialang.org/t/some-notes-on-using-ijulia-and-nbextensions-as-a-python-noob/42902)

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**Author:** [@anon67531922](https://discourse.julialang.org/u/anon67531922)\
**Replies:** 0\
**Last updated:** [July 11, 2020, 5:27pm UTC](https://discourse.julialang.org/t/some-notes-on-using-ijulia-and-nbextensions-as-a-python-noob/42902 "2020-07-11T17:27:55Z")

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Back in 2013, I was looking for an open-source alternative to Matlab (my weapon of choice for the 20+ years prior). The obvious candidates were: Python R Octave I quickly ruled out Octave and didn’t see myself using R…

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## [Getting quarto and IJulia to work](https://discourse.julialang.org/t/getting-quarto-and-ijulia-to-work/110939)

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**Author:** [@mateuszbaran](https://discourse.julialang.org/u/mateuszbaran)\
**Replies:** 11\
**Last updated:** [March 1, 2024, 10:04am UTC](https://discourse.julialang.org/t/getting-quarto-and-ijulia-to-work/110939 "2024-03-01T10:04:17Z")

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I have some issues getting Quarto and IJulia to work on my computer (Linux Mint) and standard tips don’t seem to work. What happens is the following: Trying to render a Quarto notebook results in the following error me…

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## [Notebook-specific startup script in IJulia Notebooks in VS Code](https://discourse.julialang.org/t/notebook-specific-startup-script-in-ijulia-notebooks-in-vs-code/102283)

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**Author:** [@elenev](https://discourse.julialang.org/u/elenev)\
**Replies:** 0\
**Last updated:** [July 31, 2023, 3:09am UTC](https://discourse.julialang.org/t/notebook-specific-startup-script-in-ijulia-notebooks-in-vs-code/102283 "2023-07-31T03:09:04Z")

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When working with Jupyter notebooks, I prefer VS Code’s Jupyter extension over browser-based Notebook or JupyterLab. But it looks like VS Code’s implementation of Julia Jupyter notebooks is something different from IJuli…

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## [Error in .julia$cmd(paste0(Rhomeset, "Base.include(Main,\\"", system.file("julia/setup.jl",](https://discourse.julialang.org/t/error-in-julia-cmd-paste0-rhomeset-base-include-main-system-file-julia-setup-jl/101043)

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**Author:** [@Faraz564](https://discourse.julialang.org/u/Faraz564)\
**Replies:** 2\
**Last updated:** [July 1, 2023, 10:58am UTC](https://discourse.julialang.org/t/error-in-julia-cmd-paste0-rhomeset-base-include-main-system-file-julia-setup-jl/101043 "2023-07-01T10:58:43Z")

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My Julia\_Setup is not running. Which create error. Kindly write your suggestion. Please see it below. Julia version 1.9.1 at location C:\\Users\\PC\\AppData\\Local\\Programs\\JULIA-~1.1\\bin will be used. Loading setup scrip…

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## [Getting IJulia to work inside of a mamba venv](https://discourse.julialang.org/t/getting-ijulia-to-work-inside-of-a-mamba-venv/100977)

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**Author:** [@anon56682678](https://discourse.julialang.org/u/anon56682678)\
**Replies:** 4\
**Last updated:** [June 29, 2023, 5:27pm UTC](https://discourse.julialang.org/t/getting-ijulia-to-work-inside-of-a-mamba-venv/100977 "2023-06-29T17:27:09Z")

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I am having trouble installing IJulia in Julia 1.9.1 inside a mamba environment. The crux of the issue seems to be the compiler not being able to find MbedTLS even though it is installed Looking for: \['mbedtls'\] conda-…

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## [Still not able to render a Quarto file (qmd) using Julia in VSCode. Help?](https://discourse.julialang.org/t/still-not-able-to-render-a-quarto-file-qmd-using-julia-in-vscode-help/98701)

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**Author:** [@Hugo](https://discourse.julialang.org/u/Hugo)\
**Replies:** 5\
**Last updated:** [May 22, 2023, 6:30am UTC](https://discourse.julialang.org/t/still-not-able-to-render-a-quarto-file-qmd-using-julia-in-vscode-help/98701 "2023-05-22T06:30:07Z")

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My questions is basically a follow up to a very similar question you can find here. I have: run Pkg.build("IJulia"), removed and reinstalled IJulia, and then built the package again, removed the Jupyter extension and…

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## [Error: Failed to precompile IJulia v1.24.0](https://discourse.julialang.org/t/error-failed-to-precompile-ijulia-v1-24-0/96270)

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**Author:** [@JaydevSR](https://discourse.julialang.org/u/JaydevSR)\
**Replies:** 2\
**Last updated:** [March 18, 2023, 10:36am UTC](https://discourse.julialang.org/t/error-failed-to-precompile-ijulia-v1-24-0/96270 "2023-03-18T10:36:04Z")

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I have been trying to run a particular jupyter notebook using IJulia but I get an error. A few things to note: I can run jupyter and then create a new julia notebook for which the kernel gets connected, and it is usabl…

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## [Quarto Julia CLI: Kernel died before replying to kernel\_info](https://discourse.julialang.org/t/quarto-julia-cli-kernel-died-before-replying-to-kernel-info/91416)

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**Author:** [@fortunewalla](https://discourse.julialang.org/u/fortunewalla)\
**Replies:** 7\
**Last updated:** [March 17, 2023, 9:38am UTC](https://discourse.julialang.org/t/quarto-julia-cli-kernel-died-before-replying-to-kernel-info/91416 "2023-03-17T09:38:24Z")

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I wanted to try out quarto for Julia code. I created an new Julia environment q and installed IJulia.jl and Plots.jl The jupyter kernelspec & quarto check all seem fine. when trying to render Julia example Using…

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## [REPL-like interaction within Jupyter?](https://discourse.julialang.org/t/repl-like-interaction-within-jupyter/95976)

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**Author:** [@airpmb](https://discourse.julialang.org/u/airpmb)\
**Replies:** 1\
**Last updated:** [March 12, 2023, 8:39pm UTC](https://discourse.julialang.org/t/repl-like-interaction-within-jupyter/95976 "2023-03-12T20:39:30Z")

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Is there a way to interact with Jupyter/Jupyterlab such that it behaves more like the REPL? That is, I do like the rich display of Jupyter and some other things, e.g. easier entry/editing of multiple lines before executi…

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## [Which kernel is Jupyter running?](https://discourse.julialang.org/t/which-kernel-is-jupyter-running/93932)

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**Author:** [@stecrotti](https://discourse.julialang.org/u/stecrotti)\
**Replies:** 1\
**Last updated:** [February 17, 2023, 1:09pm UTC](https://discourse.julialang.org/t/which-kernel-is-jupyter-running/93932 "2023-02-17T13:09:25Z")

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Hi, I’ve set up several IJulia 1.8.0 kernels, a plain one, another with 4 threads, another with 10, and so on. I can start any of them without problems screenshot but once it’s up and going, there seems to be no infor…

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## [Change default IJulia kernel associated to a notebook](https://discourse.julialang.org/t/change-default-ijulia-kernel-associated-to-a-notebook/94055)

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**Author:** [@mocalvao](https://discourse.julialang.org/u/mocalvao)\
**Replies:** 2\
**Last updated:** [February 5, 2023, 11:26am UTC](https://discourse.julialang.org/t/change-default-ijulia-kernel-associated-to-a-notebook/94055 "2023-02-05T11:26:20Z")

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Hi there I cloned the git repo rethinking.jl for the Statistical Rethinking, 2nd. ed. book, in order to follow along with its notebooks. My currrent version of Julia is 1.8.3, but I still have older ones (such as 1.6.2,…

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## [How to show docstring-based documentation in IJulia notebooks?](https://discourse.julialang.org/t/how-to-show-docstring-based-documentation-in-ijulia-notebooks/40814)

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**Author:** [@sylvaticus](https://discourse.julialang.org/u/sylvaticus)\
**Replies:** 3\
**Last updated:** [December 20, 2022, 11:14pm UTC](https://discourse.julialang.org/t/how-to-show-docstring-based-documentation-in-ijulia-notebooks/40814 "2022-12-20T23:14:54Z")

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If I type ?\[Function\] in a jupyter notebook with a IJulia kernel, I can see IJulia searches for the documentation and it “finds” it, but it doesn’t show it :-/ : Julia 1.4.1, IJulia 1.21.2

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## [How to write a summation in Julian?](https://discourse.julialang.org/t/how-to-write-a-summation-in-julian/91346)

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**Author:** [@xArcoirisXx](https://discourse.julialang.org/u/xArcoirisXx)\
**Replies:** 6\
**Last updated:** [December 7, 2022, 8:10am UTC](https://discourse.julialang.org/t/how-to-write-a-summation-in-julian/91346 "2022-12-07T08:10:18Z")

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How to write and solve a summation in Julian?

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## [Progress bar, or printing during execution, in Jupyter/IJulia?](https://discourse.julialang.org/t/progress-bar-or-printing-during-execution-in-jupyter-ijulia/89916)

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**Author:** [@amca01](https://discourse.julialang.org/u/amca01)\
**Replies:** 9\
**Last updated:** [November 8, 2022, 3:44am UTC](https://discourse.julialang.org/t/progress-bar-or-printing-during-execution-in-jupyter-ijulia/89916 "2022-11-08T03:44:47Z")

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I’m not sure whether this is a Julia question, or a Jupyter question, but anyway … I’m working with Julia in a Jupyter notebook (within VSCode on Windows). This is an environment I’m very happy with, and it suits me wel…

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## [IJulia, WGLMakie, and JupyterLab: No output](https://discourse.julialang.org/t/ijulia-wglmakie-and-jupyterlab-no-output/70467)

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**Author:** [@Ludovic\_Dumoulin](https://discourse.julialang.org/u/Ludovic_Dumoulin)\
**Replies:** 1\
**Last updated:** [October 27, 2022, 9:45pm UTC](https://discourse.julialang.org/t/ijulia-wglmakie-and-jupyterlab-no-output/70467 "2022-10-27T21:45:32Z")

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Hello, I am using IJulia and WGLMakie, and I’d like to make interactive plot. Unfortunately when I run this code in a cell, there is no output… Nz = 100 Nt = 10 ρ\_t = rand(Nz, Nt) using Makie: Slider using WGLMakie WG…

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## [WebIO Jupyter extension not working](https://discourse.julialang.org/t/webio-jupyter-extension-not-working/84340)

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**Author:** [@Aminath\_Shausan](https://discourse.julialang.org/u/Aminath_Shausan)\
**Replies:** 6\
**Last updated:** [October 7, 2022, 2:35pm UTC](https://discourse.julialang.org/t/webio-jupyter-extension-not-working/84340 "2022-10-07T14:35:44Z")

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Hi I am trying to replicate the interactive plots examples using Interact.jl package (Tutorial · Interact) on a Jupiter notebook. But running into problem with detecting WebIO. This is the first time I had to use WebIO …

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## [Sum of columns in julia dataframe and appen it as last element in the respective columns](https://discourse.julialang.org/t/sum-of-columns-in-julia-dataframe-and-appen-it-as-last-element-in-the-respective-columns/86837)

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**Author:** [@ayodyas](https://discourse.julialang.org/u/ayodyas)\
**Replies:** 3\
**Last updated:** [September 6, 2022, 2:17pm UTC](https://discourse.julialang.org/t/sum-of-columns-in-julia-dataframe-and-appen-it-as-last-element-in-the-respective-columns/86837 "2022-09-06T14:17:33Z")

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I have a dataframe df, using DataFrames df=DataFrame(p1 = \[1, 2, 3, 4, 5\],p2 = \[10,20,30,40,50\],p3 = \[5,5,10,20,20\]) I wanted to calculate the sum of specific columns (p1 and p2) and append it as the last row in respec…

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## [Juliaup and Julia 1.8.0](https://discourse.julialang.org/t/juliaup-and-julia-1-8-0/85973)

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**Author:** [@BLI](https://discourse.julialang.org/u/BLI)\
**Replies:** 3\
**Last updated:** [August 19, 2022, 5:15pm UTC](https://discourse.julialang.org/t/juliaup-and-julia-1-8-0/85973 "2022-08-19T17:15:35Z")

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Having been away from my computers for a while, I ran juliaup up a couple of days ago, and it upgraded my system to Julia v. 1.7.3. IJulia ran fine, using kernel 1.7.3. Today, I did juliaup up again, and it installed Ju…

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## [IJulia and Pyplot backend problem with old Python version](https://discourse.julialang.org/t/ijulia-and-pyplot-backend-problem-with-old-python-version/85216)

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**Author:** [@Freya\_the\_Goddess](https://discourse.julialang.org/u/Freya_the_Goddess)\
**Replies:** 12\
**Last updated:** [August 4, 2022, 8:46am UTC](https://discourse.julialang.org/t/ijulia-and-pyplot-backend-problem-with-old-python-version/85216 "2022-08-04T08:46:33Z")

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Hi all, I have upgraded my Python to 3.10 just to be able to use Pyplot backend (do not know if it is worth the trouble, perhaps other backend is better) I want to plot this: using Plots; pyplot(); xc = \[0,0,1,1\] yc …

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