Merge remote-tracking branch 'origin/main' into v1

Author: Christopher Rowley

.github/dependabot.yml

@@ -13,3 +13,7 @@ updates:
     directory: /
     schedule:
       interval: weekly
+  - package-ecosystem: julia
+    directory: /
+    schedule:
+      interval: weekly

.github/workflows/CompatHelper.yml

@@ -15,10 +15,9 @@ jobs:
         run: which julia
         continue-on-error: true
       - name: Install Julia, but only if it is not already available in the PATH
-        uses: julia-actions/setup-julia@v2
+        uses: julia-actions/setup-julia@v3
         with:
           version: '1'
-          arch: ${{ runner.arch }}
         if: steps.julia_in_path.outcome != 'success'
       - name: "Add the General registry via Git"
         run: |

.github/workflows/benchmark_pr.yml

@@ -8,9 +8,5 @@ jobs:
     steps:
       - uses: MilesCranmer/AirspeedVelocity.jl@action-v1
         with:
-          julia-version: "1"
           tune: "true"
-          # Post to "summary" tab of workflow run:
-          job-summary: "true"
-          # Run benchmark using PR's version of the script:
           bench-on: ${{ github.event.pull_request.head.sha }}

.github/workflows/docs.yml

@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
-      - uses: julia-actions/setup-julia@v2
+      - uses: julia-actions/setup-julia@v3
         with:
           version: '1'
       - run: |

.github/workflows/tests-nightly.yml

@@ -10,20 +10,18 @@ on:
 
 jobs:
   tests:
-    name: Test Julia (${{ matrix.jlversion }}, ${{ matrix.os }}-${{ matrix.arch }})
+    name: Test Julia (${{ matrix.jlversion }}, ${{ matrix.os }})
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
-        arch: [x64] # x86 unsupported by MicroMamba
         os: [ubuntu-latest, windows-latest, macos-latest]
         jlversion: ['~1.9.0-0', 'nightly']
     steps:
       - uses: actions/checkout@v6
-      - uses: julia-actions/setup-julia@v2
+      - uses: julia-actions/setup-julia@v3
         with:
           version: ${{ inputs.jl_version }}
-          arch: ${{ matrix.arch }}
       - uses: actions/cache@v5
         env:
           cache-name: cache-artifacts
@@ -40,6 +38,6 @@ jobs:
           JULIA_DEBUG: PythonCall
           JULIA_NUM_THREADS: '2'
       - uses: julia-actions/julia-processcoverage@v1
-      - uses: codecov/codecov-action@v5
+      - uses: codecov/codecov-action@v6
         with:
           file: lcov.info

.github/workflows/tests.yml

@@ -13,57 +13,67 @@ on:
 
 jobs:
   julia:
-    name: Julia (${{ matrix.jlversion }}, ${{ matrix.os }}, ${{ matrix.pythonexe }})
+    name: Julia (${{ matrix.jlversion }}, ${{ matrix.os }}, ${{ matrix.pythonexe }} ${{ matrix.pyversion}})
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
-        arch: [x64] # x86 unsupported by MicroMamba
         os: [ubuntu-latest, windows-latest, macos-latest]
         jlversion: ['1','1.10']
         pythonexe: ['@CondaPkg']
+        pyversion: ['3']
         include:
-        - arch: x64
-          os: ubuntu-latest
+        - os: ubuntu-latest
           jlversion: '1'
           pythonexe: python
+          pyversion: '3'
+        - os: ubuntu-latest
+          jlversion: '1'
+          pythonexe: python
+          pyversion: '3.14t'
 
     steps:
       - uses: actions/checkout@v6
 
       - name: Set up Julia ${{ matrix.jlversion }}
-        uses: julia-actions/setup-julia@v2
+        uses: julia-actions/setup-julia@v3
         with:
           version: ${{ matrix.jlversion }}
-          arch: ${{ matrix.arch }}
 
-      - uses: julia-actions/cache@v2
+      - uses: julia-actions/cache@v3
 
       - name: Build package
         uses: julia-actions/julia-buildpkg@v1
         env:
           PYTHON: python
 
+      - name: Install Python
+        id: setup-python
+        uses: actions/setup-python@v6
+        if: ${{ matrix.pythonexe == 'python' }}
+        with:
+          python-version: ${{ matrix.pyversion }}
+      
       - name: Build PyCall
         if: ${{ matrix.pythonexe == 'python' }}
         run: |
           julia --project=test -e 'import Pkg; Pkg.build("PyCall")'
         env:
-          PYTHON: python
+          PYTHON: ${{ steps.setup-python.outputs.python-path }}
 
       - name: Run tests
         uses: julia-actions/julia-runtest@v1
         env:
           JULIA_DEBUG: PythonCall
           JULIA_NUM_THREADS: '2'
-          PYTHON: python
-          JULIA_PYTHONCALL_EXE: ${{ matrix.pythonexe }}
+          PYTHON: ${{ steps.setup-python.outputs.python-path }}
+          JULIA_PYTHONCALL_EXE: ${{ case(matrix.pythonexe == 'python', steps.setup-python.outputs.python-path, matrix.pythonexe) }}
 
       - name: Process coverage
         uses: julia-actions/julia-processcoverage@v1
 
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@v6
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 
@@ -80,6 +90,9 @@ jobs:
         - os: ubuntu-latest
           pyversion: '3'
           juliaexe: julia
+        - os: ubuntu-latest
+          pyversion: '3.14t'
+          juliaexe: '@JuliaPkg'
     env:
       MANUAL_TEST_PROJECT: /tmp/juliacall-test-project
       PYTHON_JULIACALL_THREADS: '2'
@@ -106,7 +119,7 @@ jobs:
 
       - name: Set up Julia
         id: setup_julia
-        uses: julia-actions/setup-julia@v2
+        uses: julia-actions/setup-julia@v3
         with:
           # Python in the GitHub runners ships with OpenSSL 3.0. Julia 1.12 requires
           # OpenSSL 3.5. Therefore juliapkg requires Julia 1.11 or lower.
@@ -144,6 +157,6 @@ jobs:
           PYTHON_JULIACALL_PROJECT: ${{ env.MANUAL_TEST_PROJECT }}
 
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@v6
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

CHANGELOG.md

@@ -24,9 +24,18 @@
   * `pyjltype(x)` removed.
   * New functions: `pyjlarray`, `pyjldict`, `pyjlset`.
 
-## Unreleased
+## 0.9.33 (2026-05-18)
+* Add configuration via Preferences in addition to environment variables (e.g. `exe`
+  rather than `JULIA_PYTHONCALL_EXE`.)
+* Bug fixes.
+
+## 0.9.32 (2026-05-14)
 * Added `juliacall.TypeValue.__numpy_dtype__` attribute to allow converting Julia types
   to the corresponding NumPy dtype, like `numpy.dtype(jl.Int)`.
+* JuliaCall now launches Julia with 1 thread by default.
+* Added options `trace_compile` and `trace_compile_timing` to JuliaCall.
+* Initial experimental support for free-threaded Python 3.14.
+* Bug fixes.
 
 ## 0.9.31 (2025-12-17)
 * Restore support for Python 3.14+.

CondaPkg.toml

@@ -16,3 +16,4 @@ version = ">=3.10,!=3.14.0,!=3.14.1,<4"
 matplotlib = ""
 numpy = ""
 pyside6 = ""
+pandas = ""

Project.toml

@@ -1,15 +1,15 @@
 name = "PythonCall"
 uuid = "6099a3de-0909-46bc-b1f4-468b9a2dfc0d"
 authors = ["Christopher Doris <github.com/cjdoris>"]
-version = "0.9.31"
+version = "0.9.33"
 
 [deps]
 CondaPkg = "992eb4ea-22a4-4c89-a5bb-47a3300528ab"
 Dates = "ade2ca70-3891-5945-98fb-dc099432e06a"
 Libdl = "8f399da3-3557-5675-b5ff-fb832c97cbdb"
 MacroTools = "1914dd2f-81c6-5fcd-8719-6d5c9610ff09"
 Markdown = "d6f4376e-aef5-505a-96c1-9c027394607a"
-Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
+Preferences = "21216c6a-2e73-6563-6e65-726566657250"
 Serialization = "9e88b42a-f829-5b0c-bbe9-9e923198166b"
 Tables = "bd369af6-aec1-5ad0-b16a-f7cc5008161c"
 UnsafePointers = "e17b2a0c-0bdf-430a-bd0c-3a23cae4ff39"
@@ -29,7 +29,7 @@ Dates = "1"
 Libdl = "1"
 MacroTools = "0.5"
 Markdown = "1"
-Pkg = "1"
+Preferences = "1"
 PyCall = "1"
 Serialization = "1"
 Tables = "1"

README.md

@@ -14,7 +14,7 @@ Bringing [**Python®**](https://www.python.org/) and [**Julia**](https://juliala
 - Fast non-copying conversion of numeric arrays in either direction: modify Python arrays (e.g. `bytes`, `array.array`, `numpy.ndarray`) from Julia or Julia arrays from Python.
 - Helpful wrappers: interpret Python sequences, dictionaries, arrays, dataframes and IO streams as their Julia counterparts, and vice versa.
 - Beautiful stack-traces.
-- Supports modern systems: tested on Windows, MacOS and Linux, 64-bit, Julia 1.10 upwards and Python 3.10 upwards.
+- Supports modern systems: tested on Windows, MacOS and Linux; 64-bit; Julia 1.10 upwards and Python 3.10 upwards.
 
 ⭐ If you like this, a GitHub star would be lovely thank you. ⭐