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-rw-r--r--lib/sqlalchemy/orm/__init__.py5
1 files changed, 1 insertions, 4 deletions
diff --git a/lib/sqlalchemy/orm/__init__.py b/lib/sqlalchemy/orm/__init__.py
index 55b8ea536..45a777a56 100644
--- a/lib/sqlalchemy/orm/__init__.py
+++ b/lib/sqlalchemy/orm/__init__.py
@@ -231,8 +231,7 @@ def clear_mappers():
upon a fixed set of classes.
"""
- mapperlib._CONFIGURE_MUTEX.acquire()
- try:
+ with mapperlib._CONFIGURE_MUTEX:
while _mapper_registry:
try:
# can't even reliably call list(weakdict) in jython
@@ -240,8 +239,6 @@ def clear_mappers():
mapper.dispose()
except KeyError:
pass
- finally:
- mapperlib._CONFIGURE_MUTEX.release()
joinedload = strategy_options.joinedload._unbound_fn