python · ZeroIntensity · Mar 7, 2026 · Mar 7, 2026 · Mar 7, 2026 · Mar 7, 2026
@@ -127,7 +127,7 @@ simple_stmt[stmt_ty] (memo):
     | &'raise' raise_stmt
     | &'pass' pass_stmt
     | &'del' del_stmt
-    | &'yield' yield_stmt
+    | &('yield' | 'async') yield_stmt
     | &'assert' assert_stmt
     | &'break' break_stmt
     | &'continue' continue_stmt
@@ -724,6 +724,7 @@ if_expression[expr_ty]:
 yield_expr[expr_ty]:
     | 'yield' 'from' a=expression { _PyAST_YieldFrom(a, EXTRA) }
     | 'yield' a=[star_expressions] { _PyAST_Yield(a, EXTRA) }
+    | 'async' 'yield' 'from' a=expression { _PyAST_AsyncYieldFrom(a, EXTRA) }
 
 star_expressions[expr_ty]:
     | a=star_expression b=(',' c=star_expression { c })+ [','] {

diff --git a/Include/cpython/pyerrors.h b/Include/cpython/pyerrors.h
@@ -73,6 +73,11 @@ typedef struct {
     PyObject *value;
 } PyStopIterationObject;
 
+typedef struct {
+    PyException_HEAD
+    PyObject *value;
+} PyStopAsyncIterationObject;
+
 typedef struct {
     PyException_HEAD
     PyObject *name;

diff --git a/Include/internal/pycore_ast.h b/Include/internal/pycore_ast.h
@@ -32,10 +32,12 @@ PyAPI_FUNC(int) _PyGen_FetchStopIterationValue(PyObject **);
 
 PyAPI_FUNC(PyObject *)_PyCoro_GetAwaitableIter(PyObject *o);
 PyAPI_FUNC(PyObject *)_PyAsyncGenValueWrapperNew(PyThreadState *state, PyObject *);
+PyAPI_FUNC(PyObject *)_PyAsyncGenYieldFrom_New(PyThreadState *state, PyObject *);
 
 extern PyTypeObject _PyCoroWrapper_Type;
 extern PyTypeObject _PyAsyncGenWrappedValue_Type;
 extern PyTypeObject _PyAsyncGenAThrow_Type;
+extern PyTypeObject _PyAsyncGenYieldFrom_Type;
 
 #ifdef __cplusplus
 }

diff --git a/Include/internal/pycore_intrinsics.h b/Include/internal/pycore_intrinsics.h
@@ -18,8 +18,9 @@
 #define INTRINSIC_TYPEVARTUPLE                   9
 #define INTRINSIC_SUBSCRIPT_GENERIC             10
 #define INTRINSIC_TYPEALIAS                     11
+#define INSTRINSIC_ASYNC_GEN_WRAP_YIELD_FROM    12
 
-#define MAX_INTRINSIC_1                         11
+#define MAX_INTRINSIC_1                         12
 
 
 /* Binary Functions: */

diff --git a/Include/internal/pycore_magic_number.h b/Include/internal/pycore_magic_number.h
@@ -292,6 +292,7 @@ Known values:
     Python 3.15a4 3659 (Add CALL_FUNCTION_EX specialization)
     Python 3.15a4 3660 (Change generator preamble code)
     Python 3.15a4 3661 (Lazy imports IMPORT_NAME opcode changes)
+    Python 3.15a6 3662 (Asynchronous yield from changes)
 
 
     Python 3.16 will start with 3700
@@ -305,7 +306,7 @@ PC/launcher.c must also be updated.
 
 */
 
-#define PYC_MAGIC_NUMBER 3661
+#define PYC_MAGIC_NUMBER 3662
 /* This is equivalent to converting PYC_MAGIC_NUMBER to 2 bytes
    (little-endian) and then appending b'\r\n'. */
 #define PYC_MAGIC_NUMBER_TOKEN \

diff --git a/Include/internal/pycore_opcode_metadata.h b/Include/internal/pycore_opcode_metadata.h