Fastapi Tutorial Pdf Apr 2026

uvicorn main:app --host 0.0.0.0 --port 8000 This will start the development server, and you can access your API at http://localhost:8000 .

Create a new file called main.py and add the following code: fastapi tutorial pdf

app = FastAPI()

# GET endpoint to retrieve a single item by ID @app.get("/items/{item_id}") def read_item(item_id: int): for item in items: if item["id"] == item_id: return item return {"error": "Item not found"} uvicorn main:app --host 0

# Define a Pydantic model for our data class Item(BaseModel): id: int name: str description: str and deleting items.

# DELETE endpoint to delete an item @app.delete("/items/{item_id}") def delete_item(item_id: int): for item in items: if item["id"] == item_id: items.remove(item) return {"message": "Item deleted"} return {"error": "Item not found"} This code defines a few endpoints for creating, reading, updating, and deleting items.