Bump minimum supported Python version from 3.8 to 3.9 (#645)

cjdoris · web-flow · commit 7b3ddb2e431e · 2025-07-17T21:26:17.000+01:00
* Bump minimum supported Python version from 3.8 to 3.9

* Fix release notes: add new entry for Python 3.9 minimum instead of modifying old one

---------

Co-authored-by: Christopher Doris &lt;github.com/cjdoris&gt;
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
@@ -56,7 +56,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        pyversion: ["3", "3.8"]
+        pyversion: ["3", "3.9"]
 
     steps:
       - uses: actions/checkout@v4
diff --git a/CondaPkg.toml b/CondaPkg.toml
@@ -6,4 +6,4 @@ version = "<=julia"
 
 [deps.python]
 build = "**cpython**"
-version = ">=3.8,<4"
+version = ">=3.9,<4"
diff --git a/README.md b/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 1.9 upwards and Python 3.8 upwards.
+- Supports modern systems: tested on Windows, MacOS and Linux, 64-bit, Julia 1.9 upwards and Python 3.9 upwards.
 
 ⭐ If you like this, a GitHub star would be lovely thank you. ⭐
 
diff --git a/docs/src/index.md b/docs/src/index.md
@@ -7,4 +7,4 @@ 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.
-- Works anywhere: tested on Windows, MacOS and Linux, 32- and 64-bit, Julia Julia 1.9 upwards and Python 3.8 upwards.
+- Works anywhere: tested on Windows, MacOS and Linux, 32- and 64-bit, Julia Julia 1.9 upwards and Python 3.9 upwards.
diff --git a/docs/src/releasenotes.md b/docs/src/releasenotes.md
@@ -2,6 +2,7 @@
 
 ## Unreleased
 * Internal: Use heap-allocated types (PyType_FromSpec) to improve ABI compatibility.
+* Minimum supported Python version is now 3.9.
 
 ## 0.9.26 (2025-07-15)
 * Added PySide6 support to the GUI compatibility layer.
diff --git a/pyproject.toml b/pyproject.toml
@@ -12,7 +12,7 @@ classifiers = [
     "License :: OSI Approved :: MIT License",
     "Operating System :: OS Independent",
 ]
-requires-python = ">=3.8, <4"
+requires-python = ">=3.9, <4"
 dependencies = ["juliapkg >=0.1.17, <0.2"]
 
 [dependency-groups]

Original file line number	Diff line number	Diff line change
`@@ -12,7 +12,7 @@ classifiers = [`
`12`	`12`	`"License :: OSI Approved :: MIT License",`
`13`	`13`	`"Operating System :: OS Independent",`
`14`	`14`	`]`
`15`		`-requires-python = ">=3.8, <4"`
	`15`	`+requires-python = ">=3.9, <4"`
`16`	`16`	`dependencies = ["juliapkg >=0.1.17, <0.2"]`
`17`	`17`
`18`	`18`	`[dependency-groups]`