我如何找出我的 Amazon Price Tracker 项目出了什么问题？

Question

我试图创建一个程序，当产品价格低于 200 美元时发送电子邮件，但它不起作用并给我这个错误：

line 22, in <module>
    title = soup.find(id="Electric Pressure Cookers").get_text().strip()
AttributeError: 'NoneType' object has no attribute 'get_text'

我不明白为什么它不起作用。所以如果有人帮助我我会很高兴

import requests
import lxml
import smtplib
from bs4 import BeautifulSoup

url = "https://www.amazon.com/dp/B075CYMYK6?ref_=cm_sw_r_cp_ud_ct_FM9M699VKHTT47YD50Q6&th=1"
header = {
    "User-Agent": "my_user_agent",
    "Accept-Language": "my_accept_language",
}

response = requests.get(url, headers=header)

soup = BeautifulSoup(response.content, "lxml")
print(soup.prettify())

price = soup.find(class_="a-offscreen").get_text()
price_without_currency = price.split("$")[1]
price_as_float = float(price_without_currency)
print(price_as_float)

title = soup.find(id='electrical cooker').get_text().strip()
print(title)

BUY_PRICE = 200

if price_as_float < BUY_PRICE:
    message = f"{title} is now {price}"

    with smtplib.SMTP("smtp.gmail.com", port=587) as connection:
        connection.starttls()
        result = connection.login("[email protected]", "my_password")
        connection.sendmail(
            from_addr= "[email protected]",
            to_addrs= "[email protected]",
            msg =f"Subject:Amazon Price Alert!\n\n{message}\n{url}".encode("utf-8",))

我期待它给我发一封电子邮件，其中写着：产品价格现在是 {product_price}，那么你认为我必须为该程序做什么

Answer 1

实际上，当您点击 URL 时，亚马逊弹出窗口会显示接受 cookie，所以我只是添加了它。

参考文献：使用Python（漂亮的汤）抓取一个需要单击“我同意cookie”按钮的网页？

import requests
from bs4 import BeautifulSoup

url = "https://www.amazon.com/dp/B075CYMYK6?ref_=cm_sw_r_cp_ud_ct_FM9M699VKHTT47YD50Q6&th=1"
headers = {
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36'
}
response = requests.get(url, headers=headers, cookies={'__hs_opt_out': 'no'})
soup = BeautifulSoup(response.content, "lxml")
price = soup.find('span', class_='a-price-whole').get_text()
title = soup.find('span', id='productTitle').get_text()
print(price)
print(title)