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+# engine/processors.py
+# Copyright (C) 2010-2025 the SQLAlchemy authors and contributors
+# <see AUTHORS file>
+# Copyright (C) 2010 Gaetan de Menten gdementen@gmail.com
+#
+# This module is part of SQLAlchemy and is released under
+# the MIT License: https://www.opensource.org/licenses/mit-license.php
+
+"""defines generic type conversion functions, as used in bind and result
+processors.
+
+They all share one common characteristic: None is passed through unchanged.
+
+"""
+from __future__ import annotations
+
+import typing
+
+from ._py_processors import str_to_datetime_processor_factory  # noqa
+from ..util._has_cy import HAS_CYEXTENSION
+
+if typing.TYPE_CHECKING or not HAS_CYEXTENSION:
+    from ._py_processors import int_to_boolean as int_to_boolean
+    from ._py_processors import str_to_date as str_to_date
+    from ._py_processors import str_to_datetime as str_to_datetime
+    from ._py_processors import str_to_time as str_to_time
+    from ._py_processors import (
+        to_decimal_processor_factory as to_decimal_processor_factory,
+    )
+    from ._py_processors import to_float as to_float
+    from ._py_processors import to_str as to_str
+else:
+    from sqlalchemy.cyextension.processors import (
+        DecimalResultProcessor,
+    )
+    from sqlalchemy.cyextension.processors import (  # noqa: F401
+        int_to_boolean as int_to_boolean,
+    )
+    from sqlalchemy.cyextension.processors import (  # noqa: F401,E501
+        str_to_date as str_to_date,
+    )
+    from sqlalchemy.cyextension.processors import (  # noqa: F401
+        str_to_datetime as str_to_datetime,
+    )
+    from sqlalchemy.cyextension.processors import (  # noqa: F401,E501
+        str_to_time as str_to_time,
+    )
+    from sqlalchemy.cyextension.processors import (  # noqa: F401,E501
+        to_float as to_float,
+    )
+    from sqlalchemy.cyextension.processors import (  # noqa: F401,E501
+        to_str as to_str,
+    )
+
+    def to_decimal_processor_factory(target_class, scale):
+        # Note that the scale argument is not taken into account for integer
+        # values in the C implementation while it is in the Python one.
+        # For example, the Python implementation might return
+        # Decimal('5.00000') whereas the C implementation will
+        # return Decimal('5'). These are equivalent of course.
+        return DecimalResultProcessor(target_class, "%%.%df" % scale).process