bpo-39562: Allow executing asynchronous comprehensions in the asyncio REPL (GH-18968)
Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
(cherry picked from commit 9052f7a41b90f2d34011c8da68f9a4facebc8a97)
Co-authored-by: Batuhan Taşkaya <47358913+isidentical@users.noreply.github.com>
diff --git a/Lib/test/test_builtin.py b/Lib/test/test_builtin.py
index 0d24158..f680e02 100644
--- a/Lib/test/test_builtin.py
+++ b/Lib/test/test_builtin.py
@@ -390,7 +390,14 @@
'''async for i in arange(1):
a = 1''',
'''async with asyncio.Lock() as l:
- a = 1'''
+ a = 1''',
+ '''a = [x async for x in arange(2)][1]''',
+ '''a = 1 in {x async for x in arange(2)}''',
+ '''a = {x:1 async for x in arange(1)}[0]''',
+ '''a = [x async for x in arange(2) async for x in arange(2)][1]''',
+ '''a = [x async for x in (x async for x in arange(5))][1]''',
+ '''a, = [1 for x in {x async for x in arange(1)}]''',
+ '''a = [await asyncio.sleep(0, x) async for x in arange(2)][1]'''
]
policy = maybe_get_event_loop_policy()
try:
diff --git a/Misc/NEWS.d/next/Core and Builtins/2020-03-12-22-13-50.bpo-39562.E2u273.rst b/Misc/NEWS.d/next/Core and Builtins/2020-03-12-22-13-50.bpo-39562.E2u273.rst
new file mode 100644
index 0000000..dbe83c6
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2020-03-12-22-13-50.bpo-39562.E2u273.rst
@@ -0,0 +1,2 @@
+Allow executing asynchronous comprehensions on the top level when the
+``PyCF_ALLOW_TOP_LEVEL_AWAIT`` flag is given. Patch by Batuhan Taskaya.
diff --git a/Python/compile.c b/Python/compile.c
index 9cc7654..913ec99 100644
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -4469,11 +4469,14 @@
PyCodeObject *co = NULL;
comprehension_ty outermost;
PyObject *qualname = NULL;
- int is_async_function = c->u->u_ste->ste_coroutine;
int is_async_generator = 0;
- outermost = (comprehension_ty) asdl_seq_GET(generators, 0);
+ if (IS_TOP_LEVEL_AWAIT(c)) {
+ c->u->u_ste->ste_coroutine = 1;
+ }
+ int is_async_function = c->u->u_ste->ste_coroutine;
+ outermost = (comprehension_ty) asdl_seq_GET(generators, 0);
if (!compiler_enter_scope(c, name, COMPILER_SCOPE_COMPREHENSION,
(void *)e, e->lineno))
{