如何使用 python 从网站的链接页面中提取数据

Question

我一直在尝试从网页中抓取数据用于数据分析项目，并且成功地从单个页面中获取数据。

import requests
from bs4 import BeautifulSoup
import concurrent.futures
from urllib.parse import urlencode
from scraper_api import ScraperAPIClient


    client = ScraperAPIClient('key')
    results = client.get(url = "https://www.essex.ac.uk/course-search?query=&f.Level%7CcourseLevel=Undergraduate").text
    
    print(results)

以网站“https://www.essex.ac.uk/course-search?query=&f.Level%7CcourseLevel=Undergraduate”为例，我需要在每门课程中导航并获取来自该页面的称为持续时间的单个数据。

Answer 1

试试下面的方法：

client = ScraperAPIClient('key')
results = []
for i in range(10):
   results.append(client.get(url = f"https://www.essex.ac.uk/course-search?query=&f.Level%7CcourseLevel=Undergraduate&start_rank={i}1").text)
    
print(results)

遍历 10 个结果页面并将每个文本回复放入结果列表

Answer 2

import requests
from bs4 import BeautifulSoup
import concurrent.futures
from urllib.parse import urlencode
from scraper_api import ScraperAPIClient

client = ScraperAPIClient('key')
total_pages = 12
for page_no in range(total_pages):
    # you control this page_no variable.
    # go to the website and see how the api go to the next page
    # it depends on the 'start_rank' at the end of the URL
    # for example start_rank=10, start_rank=20 will get you one page after another
    rank = page_no * 10
    results = client.get(url="https://www.essex.ac.uk/course-search?query=&f.Level%7CcourseLevel=Undergraduate&start_rank={0}".format(rank)).text
    print(results)

如何使用 python 从网站的链接页面中提取数据

how do I extract data from linked pages in websites using python

python

web-scraping

python-3.x

web

web-scraping-language