使用python，requests和bs4的亚马逊价格网页抓取

我对网上搜寻亚马逊文章的价格存在疑问.我试图获取某件商品的价格，但不幸的是，它并非总是能正常工作.我随机得到状态码503(服务器不可用).我可以通过while循环解决该问题，如果状态码== 200，则该循环结束.我想了解服务器不可用的主要问题，因此我可以解决主要问题而不进行解决.到目前为止，该问题仅在亚马逊上发生.

I have a question about web scraping the price of an amazon article. I tried to get the price of an article and it works unfortunately not always. I get randomly the status code 503 (server unavailable). I can work around that problem with a while loop that ends if status code == 200. I want to understand the main problem of the unavailable server, so I can maybe fix the main problem and not work around of it. The problem occurs only on amazon so far.

这是我10次测试的代码.请求通常失败2/10次

here is my code for a 10 times test. The request usually fails 2/10 times

import requests
from bs4 import BeautifulSoup


for i in range(10):
    page = requests.get("https://www.amazon.de/Bloodborne-Game-Year-PlayStation-4/dp/B016ZU4FIQ/ref=sr_1_3?ie=UTF8&qid=1519566642&sr=8-3&keywords=bloodborne+ps4")

    if page.status_code != 200:
        print("Error status code: " + str(page.status_code))
        continue

    soup = BeautifulSoup(page.content, "html.parser")

    price = soup.find(id="priceblock_ourprice", class_="a-size-medium a-color-price")


    price_string = price.get_text()

    print(price_string)