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-rw-r--r--lib/extensions.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/extensions.py b/lib/extensions.py
index fe61303..a2bc869 100644
--- a/lib/extensions.py
+++ b/lib/extensions.py
@@ -42,6 +42,8 @@ from _psycopg import adapt, adapters, encodings, connection, cursor
from _psycopg import string_types, binary_types, new_type, register_type
from _psycopg import ISQLQuote
+from _psycopg import QueryCanceledError, TransactionRollbackError
+
"""Isolation level values."""
ISOLATION_LEVEL_AUTOCOMMIT = 0
ISOLATION_LEVEL_READ_COMMITTED = 1