FastAPI with SQLAlchemy: This Gist contains a basic setup for using FastAPI with SQLAlchemy. It includes the creation of a database engine, a session local, and a base class for declarative models. It also includes a dependency function for getting the DB session and an annotated DB dependency.

fastapi_sqlalchemy_setup.py

from fastapi import Depends
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker, Session
from sqlalchemy.ext.declarative import declarative_base
from typing import Annotated

# Database URL
SQLALCHEMY_DATABASE_URL = 'Your database url'

# Create engine
engine = create_engine(SQLALCHEMY_DATABASE_URL)

# Create session local
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

# Create base class for declarative models
Base = declarative_base()

# Dependency for getting DB session
def get_db():
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()

# Annotated DB dependency
db_dependency = Annotated[Session, Depends(get_db)]

Add basic SQL db setup in FastAPI