- evaulate decimal_return_scale statelessly. Don't re-assign to self.decimal_return_scale

so that __repr__() is maintained (for alembic tests)

1 files changed, 2 insertions, 1 deletions

diff --git a/lib/sqlalchemy/dialects/postgresql/psycopg2.py b/lib/sqlalchemy/dialects/postgresql/psycopg2.py
index 9995a1f5a..d7ce6eb90 100644
--- a/lib/sqlalchemy/dialects/postgresql/psycopg2.py
+++ b/lib/sqlalchemy/dialects/postgresql/psycopg2.py
@@ -192,7 +192,8 @@ class _PGNumeric(sqltypes.Numeric):
         if self.asdecimal:
             if coltype in _FLOAT_TYPES:
                 return processors.to_decimal_processor_factory(
-                                decimal.Decimal, self.decimal_return_scale)
+                                decimal.Decimal,
+                                self._effective_decimal_return_scale)
             elif coltype in _DECIMAL_TYPES or coltype in _INT_TYPES:
                 # pg8000 returns Decimal natively for 1700
                 return None