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-rw-r--r--lib/sqlalchemy/engine/default.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/sqlalchemy/engine/default.py b/lib/sqlalchemy/engine/default.py
index 9efb5e5f4..4d36838cd 100644
--- a/lib/sqlalchemy/engine/default.py
+++ b/lib/sqlalchemy/engine/default.py
@@ -144,7 +144,8 @@ class DefaultDialect(base.Dialect):
'description_encoding',
encoding)
- self._description_decoder = processors.to_unicode_processor_factory(
+ if self.description_encoding:
+ self._description_decoder = processors.to_unicode_processor_factory(
self.description_encoding
)
self._encoder = codecs.getencoder(self.encoding)