Here's the `dependencies.py` file for the specified location `app/api/core/dependencies/`: ```python from typing import Generator from sqlalchemy.orm import Session from app.api.db.database import SessionLocal def get_db() -> Generator[Session, None, None]: """ Dependency function that provides a SQLAlchemy session. Yields: Session: A SQLAlchemy session instance. """ db = SessionLocal() try: yield db finally: db.close() ``` This file defines a `get_db` function that serves as a dependency for FastAPI routes that require a database session. The function uses the `SessionLocal` object from `app.api.db.database` to create a new SQLAlchemy session, which is then yielded to the requesting route. The `get_db` function is a generator function that yields the session instance and ensures it is properly closed after the requesting route has finished executing. To use this dependency in a FastAPI route, you can include it as a function parameter, and FastAPI will automatically resolve the dependency by calling the `get_db` function and providing the yielded session instance. For example: ```python from fastapi import APIRouter, Depends from sqlalchemy.orm import Session from app.api.core.dependencies import get_db router = APIRouter() @router.get("/items") def get_items(db: Session = Depends(get_db)): # Use the provided db session to interact with the database ... ``` In this example, the `get_items` route receives a `Session` instance as the `db` parameter, which is automatically provided by FastAPI by calling the `get_db` dependency function. Note that you'll need to configure the `SessionLocal` object in `app.api.db.database` to connect to your SQLite database using the appropriate connection string and engine configuration.