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@app.exception_handler(RequestValidationError) async def validation_exception_handler(request, exc): return JSONResponse( status_code=422, content="error": "Invalid input", "details": exc.errors(), )

async def get_db(): db = fake_db try: yield db finally: # Close DB connection here pass fastapi tutorial pdf

from fastapi import FastAPI

FastAPI is a modern, high-performance web framework for building APIs with Python, designed for speed and developer efficiency . While the official documentation is the gold standard for learning, several curated PDF resources and comprehensive guides are available for offline study and reference. exc): return JSONResponse( status_code=422