Path Operations & Pydantic. App Setup & Routing. from fastapi import FastAPI, HTTPException, status from fastapi.middleware.cors import CORSMiddleware app = FastAPI( title="My API", description="FastAPI example", version…
ReadDependency Injection & Async. Depends() — Dependency Injection. from fastapi import Depends, HTTPException, Security from fastapi.security import OAuth2PasswordBearer oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/auth/…
ReadFastAPI Interview Questions. Q: What makes FastAPI fast?. Two things: (1) It is built on Starlette (ASGI) and uses async I/O — async route handlers don't block threads on I/O waits. (2) Pydantic v2 uses Rust-based valida…
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