and (ext/mutable.py)

SQLAlchemy extension enabling mutable scalar types with change tracking.

# Source: https://github.com/sqlalchemy/sqlalchemy | License: MIT | Copyright 2005-2026 SQLAlchemy authors and contributors <see AUTHORS file>
# Provided via justclaw.it.com; keep this notice with the code.
# ext/mutable.py
# Copyright (C) 2005-2026 the SQLAlchemy authors and contributors
# <see AUTHORS file>
#
# This module is part of SQLAlchemy and is released under
# the MIT License: https://www.opensource.org/licenses/mit-license.php

r"""Provide support for tracking of in-place changes to scalar values,
which are propagated into ORM change events on owning parent objects.

.. _mutable_scalars:

Establishing Mutability on Scalar Column Values
===============================================

A typical example of a "mutable" structure is a Python dictionary.
Following the example introdu

... (truncated -- full source via MCP)