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-rw-r--r--lib/sqlalchemy/engine/strategies.py25
1 files changed, 13 insertions, 12 deletions
diff --git a/lib/sqlalchemy/engine/strategies.py b/lib/sqlalchemy/engine/strategies.py
index 4c81df8f0..bed14c671 100644
--- a/lib/sqlalchemy/engine/strategies.py
+++ b/lib/sqlalchemy/engine/strategies.py
@@ -78,20 +78,21 @@ class DefaultEngineStrategy(EngineStrategy):
def connect():
try:
return dialect.connect(*cargs, **cparams)
- except Exception, e:
+ except Exception as e:
invalidated = dialect.is_disconnect(e, None, None)
- # Py3K
- #raise exc.DBAPIError.instance(None, None,
- # e, dialect.dbapi.Error,
- # connection_invalidated=invalidated
- #) from e
- # Py2K
- import sys
- raise exc.DBAPIError.instance(
- None, None, e, dialect.dbapi.Error,
+# start Py3K
+ raise exc.DBAPIError.instance(None, None,
+ e, dialect.dbapi.Error,
connection_invalidated=invalidated
- ), None, sys.exc_info()[2]
- # end Py2K
+ ) from e
+# end Py3K
+# start Py2K
+# import sys
+# raise exc.DBAPIError.instance(
+# None, None, e, dialect.dbapi.Error,
+# connection_invalidated=invalidated
+# ), None, sys.exc_info()[2]
+# end Py2K
creator = kwargs.pop('creator', connect)