价格监控代理 IP：按国家和城市看竞品真实价格

# pip install httpx beautifulsoup4
import os
import httpx
from bs4 import BeautifulSoup

# One rotating residential proxy per market: Exit mode "Choose region / sticky IP" + that country
MARKETS = {"US": os.environ["PROXY_US"], "DE": os.environ["PROXY_DE"]}
PRODUCT_URL = "https://shop.example.com/products/sku-123"


def read_price(html):
    soup = BeautifulSoup(html, "html.parser")
    price = soup.select_one('[itemprop="price"]')
    currency = soup.select_one('[itemprop="priceCurrency"]')
    if price is None or currency is None:
        return None  # layout change, captcha or error page: unknown, never 0
    return price.get("content") or price.get_text(strip=True), currency.get("content") or currency.get_text(strip=True)


for market, proxy in MARKETS.items():
    try:
        with httpx.Client(proxy=proxy, timeout=30, follow_redirects=True) as client:
            r = client.get(PRODUCT_URL)
    except httpx.HTTPError as exc:  # proxy refused (407), timeout or connection error
        print(market, "unknown:", type(exc).__name__)
        continue
    result = read_price(r.text) if r.status_code == 200 else None
    print(market, r.status_code, result or "unknown")