update workflow and glue

Author: mattkjames7

.github/workflows/reusable_buildtest.yml

@@ -169,15 +169,14 @@ jobs:
 
       - name: Copy Package
         run: |
-          mkdir -p dist
-          docker cp testcontainer:/pymgclient/dist/*.whl dist/
+          docker cp testcontainer:/pymgclient/dist .
 
       - name: Save source distribution package
         if: ${{ inputs.upload_artifacts && matrix.platform == 'ubuntu-24.04' }}
         uses: actions/upload-artifact@v4
         with:
           name: pymgclient-linux-${{ matrix.python_version }}
-          path: dist/
+          path: dist/*.whl
 
       - name: Cleanup
         if: always()

src/glue.c

@@ -776,7 +776,25 @@ int is_datetime_timezone(PyObject *tzinfo) {
   SCOPED_CLEANUP PyObject *timezone_class = PyObject_GetAttrString(datetime_module, "timezone");
   IF_PTR_IS_NULL_RETURN(timezone_class, 0);
 
-  return PyObject_IsInstance(tzinfo, timezone_class);
+  // Use Python-level isinstance() instead of PyObject_IsInstance for Python 3.14 compatibility
+  SCOPED_CLEANUP PyObject *builtins = PyImport_ImportModule("builtins");
+  IF_PTR_IS_NULL_RETURN(builtins, 0);
+
+  SCOPED_CLEANUP PyObject *isinstance_func = PyObject_GetAttrString(builtins, "isinstance");
+  IF_PTR_IS_NULL_RETURN(isinstance_func, 0);
+
+  SCOPED_CLEANUP PyObject *result = PyObject_CallFunction(isinstance_func, "OO", tzinfo, timezone_class);
+  if (!result) {
+    PyErr_Clear();  // Clear any error and return 0
+    return 0;
+  }
+
+  int is_instance = PyObject_IsTrue(result);
+  if (is_instance < 0) {
+    PyErr_Clear();  // Clear any error and return 0
+    return 0;
+  }
+  return is_instance;
 }
 
 mg_duration *py_delta_to_mg_duration(PyObject *obj) {