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

Lib/platform.py

@@ -1156,9 +1156,10 @@ def _sys_version(sys_version=None):
     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]"
+        r'(?:,\s*([\w ]*)'  # ", buildate"
+        r'(?:,\s*([\w :]*))?)?'  # ", buildtime"
+        r'(?:,\s*(free-threading))?\)*\s*'  # ",'free-threading')<space>'"
+        r'\[([^\]]+)\]?', re.ASCII)  #"[compiler]"
 
     if sys.platform.startswith('java'):
         # Jython
@@ -1195,7 +1196,7 @@ def _sys_version(sys_version=None):
             raise ValueError(
                 'failed to parse CPython sys.version: %s' %
                 repr(sys_version))
-        version, buildno, builddate, buildtime, compiler = \
+        version, buildno, builddate, buildtime, _, compiler = \
               match.groups()
         name = 'CPython'
         if builddate is None:

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

@@ -0,0 +1,2 @@
+Add build information to identify whether the build is default build or
+free-threading build. Patch By Donghee Na.

Modules/getbuildinfo.c

@@ -54,9 +54,16 @@ Py_GetBuildInfo(void)
     if (!(*gitid)) {
         gitid = "main";
     }
+#ifdef Py_GIL_DISABLED
+    const char *build = "free-threading";
+    PyOS_snprintf(buildinfo, sizeof(buildinfo),
+                  "%s%s%s, %.20s, %.9s, %s", gitid, sep, revision,
+                  DATE, TIME, build);
+#else
     PyOS_snprintf(buildinfo, sizeof(buildinfo),
                   "%s%s%s, %.20s, %.9s", gitid, sep, revision,
                   DATE, TIME);
+#endif
     return buildinfo;
 }