Python - FastAPI Simple Example

FastAPI Simple Example Python Code

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Overview

If you’re building modern web APIs in Python, FastAPI is an absolute must-have in your toolbox. Its speed, developer experience, and industry-standard tooling make it a compelling choice that’ll save you time and headaches.

While Flask and Django are the traditional Python web application or API frameworks, FastAPI leverages the latest Python tricks and enhancements and should technically be faster.

Code

from fastapi import FastAPI, Depends
from pydantic import BaseModel
 
class Item(BaseModel):
    name: str
    price: float
 
app = FastAPI()
 
@app.post("/items/")
async def create_item(item: Item):
    return {"message": f"Item '{item.name}' created!"}

Details

Key Features of FastAPI:

• Automatic Data Validation: Using Pydantic data models, FastAPI ensures your API endpoints always receive the correct data types and enforces any additional constraints you define (i.e. less error-handling code for you to write).
• Elegant Dependency Injection: FastAPI has an intuitive dependency injection system. Declare dependencies in your path operation functions, and FastAPI will provide them. This keeps your code organized and perfect for testing.
• Built-In Swagger/OpenAPI Documentation: FastAPI automatically generates interactive API documentation (using Swagger UI or ReDoc). This means your API is self-documenting, saving you tons of time.

See Also

• Python Map of Content
• Python Code
• Flask
• FastAPI
• LangServe
• Django
• Pydantic
• Python Flask API Project Folder Structure

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Appendix

Note created on 2024-04-15 and last modified on 2024-04-15.

Backlinks

LIST FROM [[Python - FastAPI Simple Example]] AND -"CHANGELOG" AND -"04-RESOURCES/Code/Python/Python - FastAPI Simple Example"

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