Merge branch 'main' into dev

import sys.py

@@ -0,0 +1,16 @@
+import sys
+import sysconfig
+
+print(f"Python Version: {sys.version}")
+
+# 检查 GIL 状态
+try:
+    # Python 3.13+ free-threading build 才有这个属性
+    is_gil_enabled = sys._is_gil_enabled()
+    print(f"GIL Enabled: {is_gil_enabled}")
+except AttributeError:
+    print("GIL Status: Unknown (sys._is_gil_enabled not found, likely GIL-enabled build)")
+
+# 检查 JIT 状态
+# 目前没有直接的 API 检查 JIT 是否开启，通常看性能或启动日志
+print("JIT Support: Experimental (Enable with -X jit)")

x = 5.py

@@ -0,0 +1,10 @@
+x = 5
+
+# 它有自己的身份
+print(id(x))
+
+# 它有自己的类型
+print(type(x))
+
+# 它甚至有自己的工具！
+print(x.bit_length())