bpo-32351: Use fastpath in asyncio.sleep if delay<0 (#4908)

* Use fastpath in asyncio.sleep if delay<0 * Add NEWS entry
python · Dec 17, 2017 · 5382c05 · 5382c05
1 parent 44d1a59
commit 5382c05
Show file tree

Hide file tree

Showing 2 changed files with 2 additions and 1 deletion.
diff --git a/Lib/asyncio/tasks.py b/Lib/asyncio/tasks.py
@@ -503,7 +503,7 @@ def __sleep0():
 
 async def sleep(delay, result=None, *, loop=None):
     """Coroutine that completes after a given time (in seconds)."""
-    if delay == 0:
+    if delay <= 0:
         await __sleep0()
         return result
 

diff --git a/Misc/NEWS.d/next/Library/2017-12-17-14-23-23.bpo-32351.95fh2K.rst b/Misc/NEWS.d/next/Library/2017-12-17-14-23-23.bpo-32351.95fh2K.rst
@@ -0,0 +1 @@
+Use fastpath in asyncio.sleep if delay<0 (2x boost)