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-rw-r--r--lib/sqlalchemy/engine/base.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/sqlalchemy/engine/base.py b/lib/sqlalchemy/engine/base.py
index 859fb796e..c3f99bb24 100644
--- a/lib/sqlalchemy/engine/base.py
+++ b/lib/sqlalchemy/engine/base.py
@@ -1406,6 +1406,8 @@ class ResultProxy(object):
def _has_key(self, row, key):
try:
+ # _key_cache uses __missing__ in 2.5, so not much alternative
+ # to catching KeyError
self._key_cache[key]
return True
except KeyError: