Merge pull request #3222 from WarriorOfWire/pick_micropython

py/compile: Don't await __aiter__ special method in async-for.

py/compile.c

@@ -1741,7 +1741,8 @@ STATIC void compile_async_for_stmt(compiler_t *comp, mp_parse_node_struct_t *pns
     uint try_finally_label = comp_next_label(comp);
 
     compile_node(comp, pns->nodes[1]); // iterator
-    compile_await_object_method(comp, MP_QSTR___aiter__);
+    EMIT_ARG(load_method, MP_QSTR___aiter__, false);
+    EMIT_ARG(call_method, 0, 0, 0);
     compile_store_id(comp, context);
 
     START_BREAK_CONTINUE_BLOCK

tests/basics/async_for.py

@@ -6,7 +6,7 @@ class AsyncIteratorWrapper:
         print('init')
         self._it = iter(obj)
 
-    async def __aiter__(self):
+    def __aiter__(self):
         print('aiter')
         return self
 

tests/basics/async_for2.py

@@ -1,4 +1,4 @@
-# test waiting within "async for" aiter/anext functions
+# test waiting within "async for" __anext__ function
 
 import sys
 if sys.implementation.name in ('micropython', 'circuitpython'):
@@ -21,9 +21,8 @@ class ARange:
         self.cur = 0
         self.high = high
 
-    async def __aiter__(self):
+    def __aiter__(self):
         print('aiter')
-        print('f returned:', await f(10))
         return self
 
     async def __anext__(self):

tests/basics/async_for2.py.exp

@@ -1,9 +1,5 @@
 init
 aiter
-f start: 10
-coro yielded: 11
-coro yielded: 12
-f returned: 13
 anext
 f start: 20
 coro yielded: 21