FastAPI Item Discount Calculator

This code defines a FastAPI application that contains a POST endpoint for calculating the discounted price of an item. The user needs to provide the item's name and price, as well as the discount rate.

Technology Stack : FastAPI, Pydantic

Code Type : FastAPI API Endpoint

Code Difficulty : Intermediate

                
                    
from fastapi import FastAPI, HTTPException
from pydantic import BaseModel
import random

class Item(BaseModel):
    name: str
    price: float

app = FastAPI()

def calculate_discounted_price(item: Item, discount_rate: float = 0.1):
    # Calculate the discounted price of an item
    return item.price * (1 - discount_rate)

@app.post("/calculate_discount/")
async def calculate_discount(item: Item, discount_rate: float = 0.1):
    try:
        discounted_price = calculate_discounted_price(item, discount_rate)
        return {"item": item.name, "original_price": item.price, "discounted_price": discounted_price}
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))