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from fastapi import FastAPI, HTTPException
from pydantic import BaseModel
from typing import List
app = FastAPI(
title="FastAPI CRUD Example",
description="A simple CRUD API with FastAPI",
version="1.0.0",
docs_url="/docs",
redoc_url="/redoc"
)
items = []
class Item(BaseModel):
id: int
name: str
description: str = None
@app.get("/")
async def root():
return {"message": "Welcome to FastAPI CRUD API! Visit /docs for Swagger UI."}
@app.get("/items", response_model=List[Item])
async def get_items():
return items
@app.post("/items", response_model=Item)
async def add_item(item: Item):
if any(i.id == item.id for i in items):
raise HTTPException(status_code=400, detail="Item ID already exists")
items.append(item)
return item
@app.put("/items/{item_id}", response_model=Item)
async def update_item(item_id: int, updated_item: Item):
for index, item in enumerate(items):
if item.id == item_id:
items[index] = updated_item
return updated_item
raise HTTPException(status_code=404, detail="Item not found")
@app.delete("/items/{item_id}")
async def delete_item(item_id: int):
for item in items:
if item.id == item_id:
items.remove(item)
return {"message": "Item deleted"}
raise HTTPException(status_code=404, detail="Item not found") |