The `alembic.script.ScriptDirectory` is a module in the Alembic library for Python, which provides a way to define and manage database schema migrations. It represents a directory containing migration scripts, also known as "revision" files. These scripts are written in Python and contain instructions to evolve or revert the database schema. The `ScriptDirectory` class allows developers to interact with this directory, enabling features such as querying the available migration scripts, applying or undoing migrations, and generating new migration scripts based on the current state of the database schema. It plays a central role in the migration workflow and simplifies the management of database schema changes in Python projects.
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