gh-119132: Update sys.version to identify free-threaded or not.

Lib/platform.py

@@ -1153,17 +1153,16 @@ def _sys_version(sys_version=None):
  if result is not None:
  return result
 
- sys_version_parser = re.compile(
- r'([\w.+]+)\s*' # "version<space>"
- r'\(#?([^,]+)' # "(#buildno"
- r'(?:,\s*([\w ]*)' # ", builddate"
- r'(?:,\s*([\w :]*))?)?\)\s*' # ", buildtime)<space>"
- r'\[([^\]]+)\]?', re.ASCII) # "[compiler]"
-
  if sys.platform.startswith('java'):
  # Jython
+ jython_sys_version_parser = re.compile(
+ r'([\w.+]+)\s*' # "version<space>"
+ r'\(#?([^,]+)' # "(#buildno"
+ r'(?:,\s*([\w ]*)' # ", builddate"
+ r'(?:,\s*([\w :]*))?)?\)\s*' # ", buildtime)<space>"
+ r'\[([^\]]+)\]?', re.ASCII) # "[compiler]"
  name = 'Jython'
- match = sys_version_parser.match(sys_version)
+ match = jython_sys_version_parser.match(sys_version)
  if match is None:
  raise ValueError(
  'failed to parse Jython sys.version: %s' %
@@ -1190,7 +1189,14 @@ def _sys_version(sys_version=None):
 
  else:
  # CPython
- match = sys_version_parser.match(sys_version)
+ cpython_sys_version_parser = re.compile(
+ r'([\w.+]+)\s*' # "version<space>"
+ r'(?:experimental free-threading build\s+)?' # "free-threading-build<space>"
+ r'\(#?([^,]+)' # "(#buildno"
+ r'(?:,\s*([\w ]*)' # ", builddate"
+ r'(?:,\s*([\w :]*))?)?\)\s*' # ", buildtime)<space>"
+ r'\[([^\]]+)\]?', re.ASCII) # "[compiler]"
+ match = cpython_sys_version_parser.match(sys_version)
  if match is None:
  raise ValueError(
  'failed to parse CPython sys.version: %s' %

Misc/NEWS.d/next/Build/2024-05-17-19-53-27.gh-issue-119132.wepPgM.rst

@@ -0,0 +1,2 @@
+Update :data:`sys.version` to identify whether the build is default build or
+free-threading build. Patch By Donghee Na.

Python/getversion.c

@@ -6,15 +6,20 @@
 #include "patchlevel.h"
 
 static int initialized = 0;
-static char version[250];
+static char version[300];
 
 void _Py_InitVersion(void)
 {
  if (initialized){
  return;
  }
  initialized = 1;
- PyOS_snprintf(version, sizeof(version), "%.80s (%.80s) %.80s",
+#ifdef Py_GIL_DISABLED
+ const char *buildinfo_format = "%.80s experimental free-threading build (%.80s) %.80s"
+#else
+ const char *buildinfo_format = "%.80s (%.80s) %.80s"
+#endif
+ PyOS_snprintf(version, sizeof(version), buildinfo_format,
  PY_VERSION, Py_GetBuildInfo(), Py_GetCompiler());
 }