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-rw-r--r--pyramid/scaffolds/alchemy/+package+/models/__init__.py4
1 files changed, 4 insertions, 0 deletions
diff --git a/pyramid/scaffolds/alchemy/+package+/models/__init__.py b/pyramid/scaffolds/alchemy/+package+/models/__init__.py
index a6fe0d6ee..6ffc10a78 100644
--- a/pyramid/scaffolds/alchemy/+package+/models/__init__.py
+++ b/pyramid/scaffolds/alchemy/+package+/models/__init__.py
@@ -1,3 +1,7 @@
+from sqlalchemy.orm import configure_mappers
# import all models classes here for sqlalchemy mappers
# to pick up
from .mymodel import MyModel # flake8: noqa
+
+# run configure mappers to ensure we avoid any race conditions
+configure_mappers()