- Added an optional C extension to speed up the sql layer by

  reimplementing the highest impact functions.
  The actual speedups will depend heavily on your DBAPI and
  the mix of datatypes used in your tables, and can vary from
  a 50% improvement to more than 200%. It also provides a modest
  (~20%) indirect improvement to ORM speed for large queries.
  Note that it is *not* built/installed by default.
  See README for installation instructions.

- The most common result processors conversion function were
  moved to the new "processors" module.  Dialect authors are
  encouraged to use those functions whenever they correspond
  to their needs instead of implementing custom ones.

1 files changed, 2 insertions, 6 deletions

diff --git a/lib/sqlalchemy/dialects/postgresql/pypostgresql.py b/lib/sqlalchemy/dialects/postgresql/pypostgresql.py
index 77ed44512..88f1acde7 100644
--- a/lib/sqlalchemy/dialects/postgresql/pypostgresql.py
+++ b/lib/sqlalchemy/dialects/postgresql/pypostgresql.py
@@ -12,6 +12,7 @@ import decimal
 from sqlalchemy import util
 from sqlalchemy import types as sqltypes
 from sqlalchemy.dialects.postgresql.base import PGDialect, PGExecutionContext
+from sqlalchemy import processors
 
 class PGNumeric(sqltypes.Numeric):
     def bind_processor(self, dialect):
@@ -21,12 +22,7 @@ class PGNumeric(sqltypes.Numeric):
         if self.asdecimal:
             return None
         else:
-            def process(value):
-                if value is not None:
-                    return float(value)
-                else:
-                    return value
-            return process
+            return processors.to_float
 
 class PostgreSQL_pypostgresqlExecutionContext(PGExecutionContext):
     pass