Implement minimal builtins.anext()

YashSuthar983 · YashSuthar983 · commit d08b04e48e97 · 2025-10-29T02:42:13.000+05:30
issue : #3609 Signed-off-by: Yash Suthar <yashsuthar983@gmail.com>
diff --git a/vm/src/stdlib/builtins.rs b/vm/src/stdlib/builtins.rs
@@ -534,6 +534,22 @@ mod builtins {
         iter_target.get_aiter(vm)
     }
 
+    #[pyfunction]
+    fn anext(
+        aiter: PyObjectRef,
+        default_value: OptionalArg<PyObjectRef>,
+        vm: &VirtualMachine,
+    ) -> PyResult {
+        let awaitable = vm.call_method(&aiter, "__anext__", ())?;
+
+        if default_value.is_missing() {
+            Ok(awaitable)
+        } else {
+            // TODO: Implement CPython like PyAnextAwaitable to properly handle the default value.
+            Ok(awaitable)
+        }
+    }
+
     #[pyfunction]
     fn len(obj: PyObjectRef, vm: &VirtualMachine) -> PyResult<usize> {
         obj.length(vm)
