Merge pull request #1190 from JuliaLang/ipywidgets

Implement integrations for ipywidgets, IPython, and matplotlib

Author: JamesWrigley

.github/workflows/CI.yml

@@ -9,28 +9,33 @@ on:
 jobs:
   test:
     runs-on: ${{ matrix.os }}
+    env:
+      JULIA_CONDAPKG_BACKEND: System
     strategy:
       matrix:
         julia-version: ['1.10', '1']
-        julia-arch: [x64]
+        arch: [x64]
         os: [ubuntu-latest, windows-latest, macOS-13]
         include:
           - os: macOS-latest
-            julia-arch: aarch64
+            arch: aarch64
             julia-version: '1'
           - os: ubuntu-latest
-            julia-arch: x86
+            arch: x86
             julia-version: '1'
 
     steps:
       - uses: actions/checkout@v4
+      # We install micromamba ourselves because CondaPkg can't install it on 32 bit
+      - uses: mamba-org/setup-micromamba@v2
       - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.julia-version }}
-          arch: ${{ matrix.julia-arch }}
+
       - uses: julia-actions/cache@v2
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-runtest@v1
+
       - uses: julia-actions/julia-processcoverage@v1
       - uses: codecov/codecov-action@v5
         with:

CondaPkg.toml

@@ -1,3 +1,10 @@
 [deps]
-jupyter_client = ""
+ipython = ""
 jupyter_kernel_test = ""
+ipywidgets = ""
+matplotlib = ""
+jupyter_client = ""
+ipympl = ""
+comm = ""
+# Python 3.14 segfaults something awful
+python = "3.13.*"

Project.toml

@@ -20,6 +20,12 @@ Sockets = "6462fe0b-24de-5631-8697-dd941f90decc"
 UUIDs = "cf7118a7-6976-5b1a-9a39-7adc72f591a4"
 ZMQ = "c2297ded-f4af-51ae-bb23-16f91089e4e1"
 
+[weakdeps]
+PythonCall = "6099a3de-0909-46bc-b1f4-468b9a2dfc0d"
+
+[extensions]
+PythonCallExt = "PythonCall"
+
 [compat]
 Base64 = "1"
 Conda = "1"
@@ -31,6 +37,7 @@ Markdown = "1"
 Pkg = "1"
 PrecompileTools = "1.2.1"
 Printf = "1"
+PythonCall = "0.9"
 REPL = "1"
 Random = "1"
 SHA = "0.7, 1"

docs/make.jl

@@ -1,6 +1,10 @@
 import Changelog
 using Documenter, IJulia
 
+if isdefined(Main, :Revise)
+    Revise.revise()
+end
+
 # Build the changelog
 Changelog.generate(
     Changelog.Documenter(),
@@ -16,7 +20,7 @@ makedocs(;
     sitename="IJulia",
     format=Documenter.HTML(;
         prettyurls=get(ENV, "CI", "false") == "true",
-        assets = ["assets/favicon.ico"],
+        assets = ["assets/favicon.ico", "assets/custom.css"],
     ),
     pages=[
         "Home" => "index.md",

docs/src/_changelog.md

@@ -7,6 +7,13 @@ CurrentModule = IJulia
 This documents notable changes in IJulia.jl. The format is based on [Keep a
 Changelog](https://keepachangelog.com).
 
+## Unreleased
+
+### Added
+- Implemented a [PythonCall.jl extension](manual/usage.md#Python-integration) to
+  support interactive ipywidgets and matplotlib widgets in Julia ([#1190]).
+- Added support for buffers in the Jupyter messaging protocol ([#1190]).
+
 ## [v1.30.6] - 2025-10-06
 
 ### Fixed

docs/src/assets/custom.css

@@ -0,0 +1,5 @@
+/* Add border to GIF images in the documentation */
+article img[src$=".gif"] {
+    border: 1px solid #ddd;
+    border-radius: 4px;
+}

docs/src/assets/ipywidgets.gif

@@ -58,3 +58,14 @@ IJulia.pop_postexecute_hook
 IJulia.push_posterror_hook
 IJulia.pop_posterror_hook
 ```
+
+## Python initializers
+
+See the [Python integration](../manual/usage.md#Python-integration) docs for
+more details.
+
+```@docs
+IJulia.init_matplotlib
+IJulia.init_ipywidgets
+IJulia.init_ipython
+```