将 .py 和 .pyi 后缀名改为了 .vp 和 .vpi 后缀名

Test/App/closure_test.vp

@@ -0,0 +1,45 @@
+import stdio
+import t, c
+
+
+# ============================================================
+# 闭包 + nonlocal/global 测试
+# ============================================================
+
+# 全局变量
+g_count: int = 0
+
+
+# global 关键字测试：修改全局变量
+def test_global() -> int:
+    global g_count
+    g_count = g_count + 1
+    return g_count
+
+
+# nonlocal 关键字测试：嵌套函数修改外层局部变量
+def make_counter() -> t.CPtr:
+    count: int = 0
+
+    # 内部函数（闭包）捕获 count
+    def counter() -> int:
+        nonlocal count
+        count = count + 1
+        return count
+
+    return counter
+
+
+def closure_test() -> int:
+    # global 测试
+    stdio.printf("global: %d\n", test_global())
+    stdio.printf("global: %d\n", test_global())
+    stdio.printf("global: %d\n", test_global())
+
+    # nonlocal/闭包测试
+    f: t.CPtr = make_counter()
+    stdio.printf("closure: %d\n", f())
+    stdio.printf("closure: %d\n", f())
+    stdio.printf("closure: %d\n", f())
+
+    return 0