get("/items/{item_id}") def read_item(item_id: int, q: str = None): return {"item_id": item_id, "query": q} In this example, item_id is a required integer path parameter, while q is an optional string query parameter. FastAPI infers the response format automatically, converting Python dictionaries into JSON.
FastAPI Quickstart Deployment Steps
dict() The framework validates the incoming JSON payload against the Item model. from pydantic import BaseModel class Item(BaseModel): name: str description: str = None price: float tax: float = None @app.
FastAPI represents a modern approach to building web APIs with Python, combining high performance with developer ergonomics. Setting Up Your Development Environment Before writing any code, ensure Python 3.
FastAPI Quickstart Deployment Steps
FastAPI supports modular applications by allowing you to include routers that handle specific domains of functionality. This setup provides robust data integrity and excellent IDE support, including autocomplete and type checking.
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