Test fixes for 3.15

Include/internal/pycore_magic_number.h

@@ -277,8 +277,9 @@ Known values:
     Python 3.14a7 3622 (Store annotations in different class dict keys)
     Python 3.14a7 3623 (Add BUILD_INTERPOLATION & BUILD_TEMPLATE opcodes)
     Python 3.14b1 3624 (Don't optimize LOAD_FAST when local is killed by DELETE_FAST)
+    Python 3.15a0 3650 (Initial version)
 
-    Python 3.15 will start with 3650
+    Python 3.16 will start with 3700
 
     Please don't copy-paste the same pre-release tag for new entries above!!!
     You should always use the *upcoming* tag. For example, if 3.12a6 came out
@@ -289,7 +290,7 @@ PC/launcher.c must also be updated.
 
 */
 
-#define PYC_MAGIC_NUMBER 3624
+#define PYC_MAGIC_NUMBER 3650
 /* This is equivalent to converting PYC_MAGIC_NUMBER to 2 bytes
    (little-endian) and then appending b'\r\n'. */
 #define PYC_MAGIC_NUMBER_TOKEN \

Lib/sysconfig/__init__.py

@@ -219,18 +219,7 @@ def _safe_realpath(path):
 if "_PYTHON_PROJECT_BASE" in os.environ:
     _PROJECT_BASE = _safe_realpath(os.environ["_PYTHON_PROJECT_BASE"])
 
-def is_python_build(check_home=None):
-    if check_home is not None:
-        import warnings
-        warnings.warn(
-            (
-                'The check_home argument of sysconfig.is_python_build is '
-                'deprecated and its value is ignored. '
-                'It will be removed in Python 3.15.'
-            ),
-            DeprecationWarning,
-            stacklevel=2,
-        )
+def is_python_build():
     for fn in ("Setup", "Setup.local"):
         if os.path.isfile(os.path.join(_PROJECT_BASE, "Modules", fn)):
             return True

PC/launcher.c

@@ -1272,6 +1272,7 @@ static PYC_MAGIC magic_values[] = {
     { 3500, 3549, L"3.12" },
     { 3550, 3599, L"3.13" },
     { 3600, 3649, L"3.14" },
+    { 3650, 3699, L"3.15" },
     { 0 }
 };