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-rw-r--r--lib/sqlalchemy/pool/events.py5
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/sqlalchemy/pool/events.py b/lib/sqlalchemy/pool/events.py
index 57e3893b0..27e5ef5c6 100644
--- a/lib/sqlalchemy/pool/events.py
+++ b/lib/sqlalchemy/pool/events.py
@@ -7,7 +7,7 @@
from .base import Pool
from .. import event
-from ..engine.base import Engine
+from .. import util
class PoolEvents(event.Events):
@@ -42,8 +42,11 @@ class PoolEvents(event.Events):
_target_class_doc = "SomeEngineOrPool"
_dispatch_target = Pool
+ @util.preload_module("sqlalchemy.engine")
@classmethod
def _accept_with(cls, target):
+ Engine = util.preloaded.engine.Engine
+
if isinstance(target, type):
if issubclass(target, Engine):
return Pool