Issue #26182: Raise DeprecationWarning for improper use of async/await keywords

1 files changed, 6 insertions, 1 deletions

diff --git a/Lib/asyncio/tasks.py b/Lib/asyncio/tasks.py
index 35c945c436..4c66546428 100644
--- a/Lib/asyncio/tasks.py
+++ b/Lib/asyncio/tasks.py
@@ -519,7 +519,7 @@ def sleep(delay, result=None, *, loop=None):
         h.cancel()
 
 
-def async(coro_or_future, *, loop=None):
+def async_(coro_or_future, *, loop=None):
     """Wrap a coroutine in a future.
 
     If the argument is a Future, it is returned directly.
@@ -532,6 +532,11 @@ def async(coro_or_future, *, loop=None):
 
     return ensure_future(coro_or_future, loop=loop)
 
+# Silence DeprecationWarning:
+globals()['async'] = async_
+async_.__name__ = 'async'
+del async_
+
 
 def ensure_future(coro_or_future, *, loop=None):
     """Wrap a coroutine or an awaitable in a future.