Flask-Migrate is a python package that configures SQLAlchemy and Alembic for your Flask application. Alembic is the migration tool that actually takes care of database migrations under the hood. It can automatically generate migration files based on database schema models, and apply those migrations to databases. This is truly powerful, since it enables you to have a single source of truth and a history of your database changes in source control.
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One the best features of Flask is that it’s a “microframework”, meaning it’s easy to get started and to extend as the project grows. However, sometimes projects grow so large that it becomes hard to maintain all the dependencies and coupling between components. This is where dependency injection can help, by decoupling components and dependencies. This will make the code more reusable and easier to test through mocking the interfaces that a component uses.
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