Update Python version requirements to 3.12 and above, and add support for 3.14

.github/workflows/ci.yml

@@ -22,7 +22,7 @@ jobs:
       fail-fast: false
       matrix:
         os: ['macos-13', 'macos-latest', 'ubuntu-latest', 'windows-latest']
-        python-version: ['3.10', '3.11', '3.12', '3.13']
+        python-version: ['3.12', '3.13', '3.14.0-rc.3']
     steps:
     - name: Set up the repository
       uses: actions/checkout@v4

README.rst

@@ -22,7 +22,7 @@ signals and errors) in Cython code.
 Requirements
 ------------
 
-- Python >= 3.9
+- Python >= 3.12
 - Cython >= 0.28
 - Sphinx >= 1.6 (for building the documentation)
 

pyproject.toml

@@ -20,17 +20,16 @@ classifiers = [
     "Programming Language :: C",
     "Programming Language :: Cython",
     "Programming Language :: Python",
-    "Programming Language :: Python :: 3 :: Only",
-    "Programming Language :: Python :: 3.9",
-    "Programming Language :: Python :: 3.10",
-    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
     "Programming Language :: Python :: Implementation :: CPython",
     "Topic :: System",
     "Topic :: Software Development :: Debuggers",
 ]
 urls = { Homepage = "https://github.com/sagemath/cysignals" }
-requires-python = ">=3.9,<3.14"
+requires-python = ">=3.12"
 
 [project.entry-points.pkg_config]
 cysignals = 'cysignals'

readthedocs.yml

@@ -2,6 +2,6 @@ version: 2
 conda:
     file: readthedocs-conda.yml
 python:
-    version: "3.11"
+    version: "3.12"
     pip_install: true
 

src/cysignals/signals.pyx

@@ -25,7 +25,7 @@ See ``tests.pyx`` for extensive tests.
 
 from libc.signal cimport *
 from libc.stdio cimport freopen, stdin
-from cpython.ref cimport Py_XINCREF, Py_CLEAR
+from cpython.ref cimport Py_XINCREF, Py_CLEAR, _Py_REFCNT
 from cpython.exc cimport (PyErr_Occurred, PyErr_NormalizeException,
         PyErr_Fetch, PyErr_Restore)
 from cpython.version cimport PY_MAJOR_VERSION
@@ -360,7 +360,7 @@ cdef void verify_exc_value() noexcept:
     Check that ``cysigs.exc_value`` is still the exception being raised.
     Clear ``cysigs.exc_value`` if not.
     """
-    if cysigs.exc_value.ob_refcnt == 1:
+    if cysigs.exc_value != NULL and _Py_REFCNT(cysigs.exc_value) == 1:
         # No other references => exception is certainly gone
         Py_CLEAR(cysigs.exc_value)
         return
@@ -408,5 +408,5 @@ cdef void verify_exc_value() noexcept:
     # Make sure we still have cysigs.exc_value at all; if this function was
     # called again during garbage collection it might have already been set
     # to NULL; see https://github.com/sagemath/cysignals/issues/126
-    if cysigs.exc_value != NULL and cysigs.exc_value.ob_refcnt == 1:
+    if cysigs.exc_value != NULL and _Py_REFCNT(cysigs.exc_value) == 1:
         Py_CLEAR(cysigs.exc_value)