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-rw-r--r--lib/sqlalchemy/sql/util.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/sqlalchemy/sql/util.py b/lib/sqlalchemy/sql/util.py
index 6394c43a0..8aee6a97a 100644
--- a/lib/sqlalchemy/sql/util.py
+++ b/lib/sqlalchemy/sql/util.py
@@ -454,7 +454,7 @@ def bind_values(clause):
def _quote_ddl_expr(element):
- if isinstance(element, util.string_types):
+ if isinstance(element, str):
element = element.replace("'", "''")
return "'%s'" % element
else: