fix an inadvertent abuse of variable scope

diff --git a/lib/sqlalchemy/orm/persistence.py b/lib/sqlalchemy/orm/persistence.py
index 746395919afebf9428266412c69bf7aa2b2a2a96..31c9891b82907051d387b6e00eb4613d382eb678 100644 (file)
--- a/lib/sqlalchemy/orm/persistence.py
+++ b/lib/sqlalchemy/orm/persistence.py
@@ -608,9 +608,10 @@ def _emit_post_update_statements(base_mapper, uowtransaction,
     for key, grouper in groupby(
         update, lambda rec: (rec[4], rec[2].keys())
     ):
+        connection = key[0]
         multiparams = [params for state, state_dict, 
                                 params, mapper, conn in grouper]
-        cached_connections[conn].\
+        cached_connections[connection].\
                             execute(statement, multiparams)