Building a Product Review Aggregator Across Multiple Sites

Product reviews are scattered across Amazon, Best Buy, Walmart, and dozens of niche sites. Building an aggregator that pulls reviews from multiple sources gives you a comprehensive view of any product. Here's how to build one with Python. Why Aggregate Reviews? Complete picture — no single site has all reviews Spot fake reviews — cross-reference sentiment across platforms Competitive analysis — compare products using aggregated ratings Market research — understand what customers love and hate Architecture Our aggregator will: Search for a product across multiple retail sites Extract reviews, ratings, and metadata Normalize data into a common format Analyze sentiment and generate insights Setting Up pip install requests beautifulsoup4 pandas textblob Base Review Scraper import requests from bs4 import BeautifulSoup from dataclasses import dataclass from typing import Optional from datetime import datetime @dataclass class Review : product_name : str reviewer : str rating : float title :