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-rw-r--r--lib/sqlalchemy/util/concurrency.py4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/sqlalchemy/util/concurrency.py b/lib/sqlalchemy/util/concurrency.py
index 4c4ea20d1..e0883aa68 100644
--- a/lib/sqlalchemy/util/concurrency.py
+++ b/lib/sqlalchemy/util/concurrency.py
@@ -7,6 +7,7 @@ if compat.py3k:
from ._concurrency_py3k import await_fallback
from ._concurrency_py3k import greenlet
from ._concurrency_py3k import greenlet_spawn
+ from ._concurrency_py3k import AsyncAdaptedLock
else:
asyncio = None
greenlet = None
@@ -19,3 +20,6 @@ else:
def greenlet_spawn(fn, *args, **kw):
raise ValueError("Cannot use this function in py2.")
+
+ def AsyncAdaptedLock(*args, **kw):
+ raise ValueError("Cannot use this function in py2.")