BeautifulSoup Webscrape 问题

Question

我对 Python 和一般编码非常陌生。我在 YouTube 上关注关于网页抓取的视频教程，但在尝试运行我的代码时遇到了问题。

我想做什么：

• 我正在尝试编写查询以从中提取所有首页交易 一个网站 (CigarMonster.com) 并拉取 5 个属性 (Cigar 描述、尺寸/数量描述、原价、销售价格和 百分比折扣）来自页面上的每个列表。我想捕捉 CSV 文件中的内容。

我尝试过的：

• 我一直在 Anaconda 中测试代码，每个单独的属性都获取了正确的 text/html。
• 我无法运行整个脚本。我收到错误消息，但不确定发生了什么。

下面是脚本：

from urllib.request import Request, urlopen
from bs4 import BeautifulSoup as soup

#opens up connection and grabs the webpage
url = 'https://www.cigarmonster.com/'
req = Request(url, headers={'User-Agent': 'Mozilla/5.0'})

web_byte = urlopen(req).read()

webpage = web_byte.decode('utf-8')

#parses html
page_soup = soup(webpage, "html.parser")

# grabs each of the products
containers = page_soup.findAll("div",{"class":"quickview-pop launchModal"})

filename = "cigar_list.csv"

f = open(filename, "w")

headers = "cigar_brand,product_size,famous_price, monster_price, percent_off"

f.write(headers)

for container in containers:
    try:
        cigar_brand = container.find("div",{"class":"item-grid-product-title"}).text
    except Exception as e:
        cigar_brand = "NA"
    else:
        pass
    finally:
        pass

    size_container = container.findAll("span", {"class":"product-subtitle"})

    product_size = size_container[0].text

    famous_price_container = container.findAll("div",{"class":"col-xs-12 item-grid-product-fss-price"})

    famous_price = famous_price_container[0].text

    monster_price_container = container.findAll("div",{"class":"col-xs-12 item-grid-product-monster-price"})

    monster_price = monster_price_container[0].text

    percent_off_container = container.findAll("div",{"class":"col-xs-12 item-grid-product-fss-pct"})

    percent_off = percent_off_container[0].text

    #print("cigar_brand: " +  cigar_brand)
    #print("product_size: " +  product_size)
    #print("famous_price: " + famous_price)  
    #print("monster_price: " +  monster_price)
    #print("percent_off: " +  percent_off)
    f.write(cigar_brand + "," + product_size + "," + famous_price + "," + monster_price + "," + percent_off + "\n")
 
f.close()

运行脚本时出现以下错误：

Traceback (most recent call last):
  File "cigar_monster_scrape.py", line 8, in <module>
    uClient = urlopen(uReq).read()
  File "C:\Users\nmbuc\anaconda3\lib\urllib\request.py", line 222, in urlopen
    return opener.open(url, data, timeout)
  File "C:\Users\nmbuc\anaconda3\lib\urllib\request.py", line 525, in open
    response = self._open(req, data)
  File "C:\Users\nmbuc\anaconda3\lib\urllib\request.py", line 547, in _open
    return self._call_chain(self.handle_open, 'unknown',
  File "C:\Users\nmbuc\anaconda3\lib\urllib\request.py", line 502, in _call_chain
    result = func(*args)
  File "C:\Users\nmbuc\anaconda3\lib\urllib\request.py", line 1421, in unknown_open
    raise URLError('unknown url type: %s' % type)
urllib.error.URLError: <urlopen error unknown url type: https>

一开始我也遇到了相当多的缩进错误。

Answer 1

更改下面的 2 行代码，然后就可以开始了。在下面的代码中，我使用了 requests 而不是 urlib 其余一切都是一样的。

import requests   

url = 'https://www.cigarmonster.com/'
req = requests.get(url, headers={'User-Agent': 'Mozilla/5.0'})    

#parses html
page_soup = soup(req.text, "html.parser")