Add preliminary support for Python 3.15

.github/workflows/tests.yaml

@@ -40,7 +40,8 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        python-version: &matrix-python-version ["3.10", "3.11", "3.12", "3.13", "3.14"]
+        python-version:
+          &matrix-python-version ["3.10", "3.11", "3.12", "3.13", "3.14", "3.15-dev"]
         include:
           - os: macos-latest
             python-version: "3.10"

pyproject.toml

@@ -39,7 +39,7 @@ dependencies = [
   # Also upgrade test-min dependency group and requirements_test_min.txt.
   # Pinned to dev of second minor update to allow editable installs and fix primer issues,
   # see https://github.com/pylint-dev/astroid/issues/1341
-  "astroid>=4.2.0b1,<=4.3",
+  "astroid>=4.2.0b3,<=4.3",
   "colorama>=0.4.5; sys_platform=='win32'",
   "dill>=0.2; python_version<'3.11'",
   "dill>=0.3.6; python_version>='3.11'",
@@ -88,7 +88,7 @@ docs = [
 # Configuration for the build system
 test-min = [
   # Base test dependencies
-  "astroid==4.2.0b1",                   # Pinned to a specific version for tests
+  "astroid==4.2.0b3",                   # Pinned to a specific version for tests
   "py~=1.11.0",
   "pytest>=8.4,<10",
   "pytest-benchmark~=5.1",

requirements_test_min.txt

@@ -1,6 +1,6 @@
 .[testutils,spelling]
 # astroid dependency is also defined in pyproject.toml
-astroid==4.2.0b1   # Pinned to a specific version for tests
+astroid==4.2.0b3   # Pinned to a specific version for tests
 typing-extensions~=4.15
 py~=1.11.0
 pytest>=8.4,<10.0

tests/functional/d/deprecated/deprecated_methods_py36.rc

@@ -0,0 +1,2 @@
+[testoptions]
+max_pyver=3.14

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 minversion = 3.0
-envlist = formatting, py310, py311, py312, py313, py314, pypy, benchmark
+envlist = formatting, py310, py311, py312, py313, py314, py315, pypy, benchmark
 skip_missing_interpreters = true
 requires = pip >=21.3.1
 isolated_build = true