Build: CPython 3.15.0 final (python-build-standalone 20261013)

gradle.properties

@@ -23,9 +23,9 @@ org.jetbrains.compose.experimental.jscanvas.enabled=true
 org.jetbrains.compose.experimental.uikit.enabled=true
 
 # Python Build
-pythonVersion=3.14.7
+pythonVersion=3.15.0
 pythonFreeThreaded=false
-pythonBuildStandaloneRelease=20260807
+pythonBuildStandaloneRelease=20261013
 pythonAppleSupportBuild=b11
 
 # GraalVM native-image (sample's nativeCompile task). Liberica NIK is not in a location Gradle's

python-checksums.properties

@@ -1,23 +1,23 @@
 # Python Multiplatform Checksums
 android-aarch64-3.14.7=6d50cc3aa66e414a439594089bcdfb5f1264358155c70c1f00471c24cfb477fb
-android-aarch64-3.15.0rc1=7d6fb28a69368841656f919a08141b0e3720837ac67987388037ee9d2a5c5492
+android-aarch64-3.15.0=571e4cf4e0aee3d1ab54a52ca3d4e6845b85ec0bb327f7debfb873172f445dab
 android-x86_64-3.14.7=2c16ce2359565cd8c24f86cfb75630768ba6607e732946b294b969797f583b60
-android-x86_64-3.15.0rc1=f048f5c60b538efc64e4c26399a0a21202ce430949d5b2c10369d624548a5dc3
+android-x86_64-3.15.0=2413d51948d612cf42baefba25295bb83c2ed84df5726af6fe5bde2dec5d87e7
 ios-3.14-b11=b591f3301bd22a4f423c49c746cac9e55558b909fd14d6eb8327ccc62234ab7b
-ios-3.15.0rc1-pythonorg=178bf7bef9cd0f18b27cacb98b14332a5ba44c9427543ffb71f8809bc1f11c3c
+ios-3.15.0-pythonorg=68e98ab35cc0643ba3a227a8c7768da45c2a5e67dbe1bc26598537e96680fd19
 linux-x86_64-3.14.7-20260807=a2478d654ed51d443bae21ec20ad927f116b4f5aae4094ab74918a6aa38f0575
 linux-x86_64-3.14.7-20260807-freethreaded=13f80b7fc242814c0be4e2a4d8283f39c7e1c0f3f0d8f6d6a15cedb5b62eb6d3
-linux-x86_64-3.15.0rc1-20260807=aeb0d2cfe5e7028170039a95b96d74aa6830efe2fc49808122aa8f835d6e9f31
-linux-x86_64-3.15.0rc1-20260807-freethreaded=c04c940dbf8eca39c66c73d8c51330341a5a7f9b3b13f689ec14521c6357a44d
+linux-x86_64-3.15.0-20261013=69740dcd9b3480b3d53760f2d3b75582adb14fa54434628dea32480ddede542a
+linux-x86_64-3.15.0-20261013-freethreaded=afd020a480ce1767d6ac1b56e97b59c6c06f85e3a95a42f69ae146d25a07689e
 macos-aarch64-3.14.7-20260807=532645be202d3df8510ab318ca5faed92060a694c8327144e14fa81f31af0f6d
 macos-aarch64-3.14.7-20260807-freethreaded=618fe8d34b0704ce4a8aa2cfa6fa96063d6aa48970a131f19e1591d9785d1111
-macos-aarch64-3.15.0rc1-20260807=bfd0fa8be7d7dfb5c75f6848757feb4bb9e4274da634e97e77aa00c8e521a6a0
-macos-aarch64-3.15.0rc1-20260807-freethreaded=7dc7e3758b6a77358b24d795e0a7eee3b5f3d9bc5fa0e3e3c65db52898f07815
+macos-aarch64-3.15.0-20261013=b4ab2009803cef142e4ebf2ebef225f6875f83cc35caf4eefb437aa9b2b76783
+macos-aarch64-3.15.0-20261013-freethreaded=94e34d776cff596017d15fce1b2175d463628a765ddb37412a39aaba6d31bf67
 macos-x86_64-3.14.7-20260807=9964e2d618ebea03be8ea3e65ab0ecc0f2b030ce203345b8f92654641fd4de66
 macos-x86_64-3.14.7-20260807-freethreaded=746207f0d2644c5c98619f9d0ed37824d9871ea8d27640edc779a46d85038b3b
-macos-x86_64-3.15.0rc1-20260807=f36c0921d03468747ed74c434e4b04749a35593718cd641d0f08fa01e9c7885e
-macos-x86_64-3.15.0rc1-20260807-freethreaded=69beed4659c78b3683f1ea56c12956c7234f16e0417edf24f7f69c5a9f7b09ec
+macos-x86_64-3.15.0-20261013=4760e8fb2821441c0dbc72be49a25400c6ae90be4daa7e2a49617ed09f6a2919
+macos-x86_64-3.15.0-20261013-freethreaded=c552d4f10738f35de58be64716ec5104f55337d71e962e2beb09164e98cff1ec
 windows-x86_64-3.14.7-20260807=840e368318d1630bd8efbd3f7de8fab32cb4bbd735baef733f9034f2676c6a92
 windows-x86_64-3.14.7-20260807-freethreaded=c8323293c9e76e8b244a0e533894512f067dac2a6aa2dfcb3494cbe74b3af58e
-windows-x86_64-3.15.0rc1-20260807=bc0d0f3c7b88873688f30bc78da8387a6653a5493424951d3a84c658c973198e
-windows-x86_64-3.15.0rc1-20260807-freethreaded=e5998e014f16074ac9f6d61eb2a31ff8ac8bc331b61da2c5acf7d15abf4a2650
+windows-x86_64-3.15.0-20261013=743d2269e74a98f7c4281dbc2e8710c171be1965693720aac818ff0157e4d965
+windows-x86_64-3.15.0-20261013-freethreaded=aadcd190365f1154854478da313219691ab14cc35497daec66a2149f3571ae36

python-multiplatform-gradle-plugin/build.gradle.kts

@@ -243,8 +243,8 @@ val generateCoordinates = tasks.register("generateCoordinates") {
         val file = rootDir.resolve("../gradle.properties")
         if (file.isFile) file.inputStream().use { load(it) }
     }
-    val pythonVersionValue = rootProperties.getProperty("pythonVersion") ?: "3.14.7"
-    val pbsReleaseValue = rootProperties.getProperty("pythonBuildStandaloneRelease") ?: "20260807"
+    val pythonVersionValue = rootProperties.getProperty("pythonVersion") ?: "3.15.0"
+    val pbsReleaseValue = rootProperties.getProperty("pythonBuildStandaloneRelease") ?: "20261013"
     val freeThreadedValue = rootProperties.getProperty("pythonFreeThreaded")?.toBoolean() ?: false
 
     // `python-multiplatform` itself is versioned "$pythonVersion-alpha01" -- see that build's own

python-multiplatform/build.gradle.kts

@@ -38,7 +38,7 @@ plugins {
 
 val configuredPythonVersion = project.findProperty("pythonVersion")?.toString() ?: project.rootProject.version.toString()
 val pythonFreeThreaded = project.findProperty("pythonFreeThreaded")?.toString()?.toBoolean() ?: false
-val pbsRelease = project.findProperty("pythonBuildStandaloneRelease")?.toString() ?: "20260807"
+val pbsRelease = project.findProperty("pythonBuildStandaloneRelease")?.toString() ?: "20261013"
 val pythonAppleSupportBuild = project.findProperty("pythonAppleSupportBuild")?.toString() ?: "b11"
 
 val pythonVersion = configuredPythonVersion

python-multiplatform/src/nativeInterop/cinterop/include/Python.h

@@ -9,10 +9,11 @@
 // is not needed.
 
 
-// Include Python header files
-#include "patchlevel.h"
-#include "pyconfig.h"
-#include "pymacconfig.h"
+// Include Python configuration headers
+#include "patchlevel.h"     // the Python version
+#include "pyconfig.h"       // information from configure
+#include "pymacconfig.h"    // overrides for pyconfig
+#include "pyabi.h"          // feature/ABI selection
 
 
 // Include standard header files
@@ -22,12 +23,13 @@
 #include <limits.h>               // INT_MAX
 #include <math.h>                 // HUGE_VAL
 #include <stdarg.h>               // va_list
+#include <string.h>               // memcpy()
 #include <wchar.h>                // wchar_t
 #ifdef HAVE_SYS_TYPES_H
 #  include <sys/types.h>          // ssize_t
 #endif
 
-// <errno.h>, <stdio.h>, <stdlib.h> and <string.h> headers are no longer used
+// <errno.h>, <stdio.h> and <stdlib.h> headers are no longer used
 // by Python, but kept for the backward compatibility of existing third party C
 // extensions. They are not included by limited C API version 3.11 and newer.
 //
@@ -37,7 +39,6 @@
 #  include <errno.h>              // errno
 #  include <stdio.h>              // FILE*
 #  include <stdlib.h>             // getenv()
-#  include <string.h>             // memcpy()
 #endif
 #if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030d0000
 #  include <ctype.h>              // tolower()
@@ -46,43 +47,40 @@
 #  endif
 #endif
 
-// gh-111506: The free-threaded build is not compatible with the limited API
-// or the stable ABI.
-#if defined(Py_LIMITED_API) && defined(Py_GIL_DISABLED)
-#  error "The limited API is not currently supported in the free-threaded build"
-#endif
-
-#if defined(Py_GIL_DISABLED) && defined(_MSC_VER)
-#  include <intrin.h>             // __readgsqword()
-#endif
+#if !defined(Py_LIMITED_API)
+#  if defined(Py_GIL_DISABLED)
+#    if defined(_MSC_VER) || defined(__MINGW32__)
+#      include <intrin.h>             // __readgsqword()
+#    endif
+#  endif
+#endif // Py_GIL_DISABLED
 
-#if defined(Py_GIL_DISABLED) && defined(__MINGW32__)
-#  include <intrin.h>             // __readgsqword()
+#ifdef _MSC_VER
+// Ignore MSC warning C4201: "nonstandard extension used: nameless
+// struct/union".  (Only generated for C standard versions less than C11, which
+// we don't *officially* support.)
+__pragma(warning(push))
+__pragma(warning(disable: 4201))
 #endif
 
-// Suppress known warnings in Python header files.
-#if defined(_MSC_VER)
-// Warning that alignas behaviour has changed. Doesn't affect us, because we
-// never relied on the old behaviour.
-#pragma warning(push)
-#pragma warning(disable: 5274)
-#endif
 
 // Include Python header files
 #include "pyport.h"
+#include "exports.h"
 #include "pymacro.h"
 #include "pymath.h"
 #include "pymem.h"
 #include "pytypedefs.h"
 #include "pybuffer.h"
 #include "pystats.h"
 #include "pyatomic.h"
-#include "lock.h"
+#include "cpython/pylock.h"
 #include "critical_section.h"
 #include "object.h"
 #include "refcount.h"
 #include "objimpl.h"
-#include "typeslots.h"
+#include "slots.h"
+#include "slots_generated.h"
 #include "pyhash.h"
 #include "cpython/pydebug.h"
 #include "bytearrayobject.h"
@@ -104,7 +102,7 @@
 #include "setobject.h"
 #include "methodobject.h"
 #include "moduleobject.h"
-#include "monitoring.h"
+#include "cpython/monitoring.h"
 #include "cpython/funcobject.h"
 #include "cpython/classobject.h"
 #include "fileobject.h"
@@ -120,6 +118,7 @@
 #include "cpython/genobject.h"
 #include "descrobject.h"
 #include "genericaliasobject.h"
+#include "cpython/sentinelobject.h"
 #include "warnings.h"
 #include "weakrefobject.h"
 #include "structseq.h"
@@ -147,9 +146,8 @@
 #include "cpython/pyfpe.h"
 #include "cpython/tracemalloc.h"
 
-// Restore warning filter
 #ifdef _MSC_VER
-#pragma warning(pop)
+__pragma(warning(pop))  // warning(disable: 4201)
 #endif
 
 #endif /* !Py_PYTHON_H */

python-multiplatform/src/nativeInterop/cinterop/include/cpython/abstract.h

@@ -6,7 +6,7 @@
 
 /* Like PyObject_CallMethod(), but expect a _Py_Identifier*
    as the method name. */
-PyAPI_FUNC(PyObject*) _PyObject_CallMethodId(
+Py_DEPRECATED(3.15) PyAPI_FUNC(PyObject*) _PyObject_CallMethodId(
     PyObject *obj,
     _Py_Identifier *name,
     const char *format, ...);

python-multiplatform/src/nativeInterop/cinterop/include/cpython/bytearrayobject.h

@@ -5,25 +5,25 @@
 /* Object layout */
 typedef struct {
     PyObject_VAR_HEAD
-    Py_ssize_t ob_alloc;   /* How many bytes allocated in ob_bytes */
+    /* How many bytes allocated in ob_bytes
+
+       In the current implementation this is equivalent to Py_SIZE(ob_bytes_object).
+       The value is always loaded and stored atomically for thread safety.
+       There are API compatibilty concerns with removing so keeping for now. */
+    Py_ssize_t ob_alloc;
     char *ob_bytes;        /* Physical backing buffer */
     char *ob_start;        /* Logical start inside ob_bytes */
     Py_ssize_t ob_exports; /* How many buffer exports */
+    PyObject *ob_bytes_object;  /* PyBytes for zero-copy bytes conversion */
 } PyByteArrayObject;
 
-PyAPI_DATA(char) _PyByteArray_empty_string[];
-
 /* Macros and static inline functions, trading safety for speed */
 #define _PyByteArray_CAST(op) \
     (assert(PyByteArray_Check(op)), _Py_CAST(PyByteArrayObject*, op))
 
 static inline char* PyByteArray_AS_STRING(PyObject *op)
 {
-    PyByteArrayObject *self = _PyByteArray_CAST(op);
-    if (Py_SIZE(self)) {
-        return self->ob_start;
-    }
-    return _PyByteArray_empty_string;
+    return _PyByteArray_CAST(op)->ob_start;
 }
 #define PyByteArray_AS_STRING(self) PyByteArray_AS_STRING(_PyObject_CAST(self))
 

python-multiplatform/src/nativeInterop/cinterop/include/cpython/bytesobject.h

@@ -40,3 +40,46 @@ _PyBytes_Join(PyObject *sep, PyObject *iterable)
 {
     return PyBytes_Join(sep, iterable);
 }
+
+
+// --- PyBytesWriter API -----------------------------------------------------
+
+typedef struct PyBytesWriter PyBytesWriter;
+
+PyAPI_FUNC(PyBytesWriter *) PyBytesWriter_Create(
+    Py_ssize_t size);
+PyAPI_FUNC(void) PyBytesWriter_Discard(
+    PyBytesWriter *writer);
+PyAPI_FUNC(PyObject*) PyBytesWriter_Finish(
+    PyBytesWriter *writer);
+PyAPI_FUNC(PyObject*) PyBytesWriter_FinishWithSize(
+    PyBytesWriter *writer,
+    Py_ssize_t size);
+PyAPI_FUNC(PyObject*) PyBytesWriter_FinishWithPointer(
+    PyBytesWriter *writer,
+    void *buf);
+
+PyAPI_FUNC(void*) PyBytesWriter_GetData(
+    PyBytesWriter *writer);
+PyAPI_FUNC(Py_ssize_t) PyBytesWriter_GetSize(
+    PyBytesWriter *writer);
+
+PyAPI_FUNC(int) PyBytesWriter_WriteBytes(
+    PyBytesWriter *writer,
+    const void *bytes,
+    Py_ssize_t size);
+PyAPI_FUNC(int) PyBytesWriter_Format(
+    PyBytesWriter *writer,
+    const char *format,
+    ...);
+
+PyAPI_FUNC(int) PyBytesWriter_Resize(
+    PyBytesWriter *writer,
+    Py_ssize_t size);
+PyAPI_FUNC(int) PyBytesWriter_Grow(
+    PyBytesWriter *writer,
+    Py_ssize_t size);
+PyAPI_FUNC(void*) PyBytesWriter_GrowAndUpdatePointer(
+    PyBytesWriter *writer,
+    Py_ssize_t size,
+    void *buf);

python-multiplatform/src/nativeInterop/cinterop/include/cpython/ceval.h

@@ -23,6 +23,9 @@ _PyEval_RequestCodeExtraIndex(freefunc f) {
 
 PyAPI_FUNC(int) _PyEval_SliceIndex(PyObject *, Py_ssize_t *);
 PyAPI_FUNC(int) _PyEval_SliceIndexNotNone(PyObject *, Py_ssize_t *);
+PyAPI_FUNC(int) _PyEval_UnpackIndices(PyObject *, PyObject *,
+                                      Py_ssize_t,
+                                      Py_ssize_t *, Py_ssize_t *);
 
 
 // Trampoline API
@@ -35,7 +38,7 @@ typedef struct {
 PyAPI_FUNC(int) PyUnstable_PerfMapState_Init(void);
 PyAPI_FUNC(int) PyUnstable_WritePerfMapEntry(
     const void *code_addr,
-    unsigned int code_size,
+    size_t code_size,
     const char *entry_name);
 PyAPI_FUNC(void) PyUnstable_PerfMapState_Fini(void);
 PyAPI_FUNC(int) PyUnstable_CopyPerfMapFile(const char* parent_filename);

python-multiplatform/src/nativeInterop/cinterop/include/cpython/code.h

@@ -282,15 +282,6 @@ typedef struct _line_offsets {
 */
 PyAPI_FUNC(int) _PyCode_CheckLineNumber(int lasti, PyCodeAddressRange *bounds);
 
-/* Create a comparable key used to compare constants taking in account the
- * object type. It is used to make sure types are not coerced (e.g., float and
- * complex) _and_ to distinguish 0.0 from -0.0 e.g. on IEEE platforms
- *
- * Return (type(obj), obj, ...): a tuple with variable size (at least 2 items)
- * depending on the type and the value. The type is the first item to not
- * compare bytes and str which can raise a BytesWarning exception. */
-PyAPI_FUNC(PyObject*) _PyCode_ConstantKey(PyObject *obj);
-
 PyAPI_FUNC(PyObject*) PyCode_Optimize(PyObject *code, PyObject* consts,
                                       PyObject *names, PyObject *lnotab);
 

python-multiplatform/src/nativeInterop/cinterop/include/cpython/complexobject.h

@@ -7,7 +7,8 @@ typedef struct {
     double imag;
 } Py_complex;
 
-// Operations on complex numbers.
+/* Operations on complex numbers (soft deprecated
+   since Python 3.15). */
 PyAPI_FUNC(Py_complex) _Py_c_sum(Py_complex, Py_complex);
 PyAPI_FUNC(Py_complex) _Py_c_diff(Py_complex, Py_complex);
 PyAPI_FUNC(Py_complex) _Py_c_neg(Py_complex);