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-rw-r--r--Lib/asyncio/events.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/Lib/asyncio/events.py b/Lib/asyncio/events.py
index 57af68afb6..31592d10b1 100644
--- a/Lib/asyncio/events.py
+++ b/Lib/asyncio/events.py
@@ -16,7 +16,7 @@ import socket
class Handle:
"""Object returned by callback registration methods."""
- __slots__ = ['_callback', '_args', '_cancelled', '_loop']
+ __slots__ = ['_callback', '_args', '_cancelled', '_loop', '__weakref__']
def __init__(self, callback, args, loop):
assert not isinstance(callback, Handle), 'A Handle is not a callback'