Question

我试图从https://www.udemy.com/courses/search/?q=sql&src=ukw&lang=en抓取所有链接但是甚至没有选择元素，我的代码检索不到任何链接。请参阅下面的代码。

import bs4,requests as rq
Link = 'https://www.udemy.com/courses/search/?q=sql&src=ukw&lang=en'
RQOBJ = rq.get(Link)
BS4OBJ = bs4.BeautifulSoup(RQOBJ.text)
print(BS4OBJ)

Answer 1

网站使用javascript来获取数据，你应该使用selenium

Answer 2

希望您想要在页面上链接课程，此代码将有所帮助

from selenium import webdriver
from bs4 import BeautifulSoup
import time

baseurl='https://www.udemy.com'
url="https://www.udemy.com/courses/search/?q=sql&src=ukw&lang=en"
driver = webdriver.Chrome()
driver.maximize_window()
driver.get(url)

time.sleep(5)
content = driver.page_source.encode('utf-8').strip()
soup = BeautifulSoup(content,"html.parser")
courseLink = soup.findAll("a", {"class": "card__title",'href': True})

for link in courseLink:
    print baseurl+link['href']

driver.quit()

它将打印：

https://www.udemy.com/the-complete-sql-bootcamp/
https://www.udemy.com/the-complete-oracle-sql-certification-course/
https://www.udemy.com/introduction-to-sql23/
https://www.udemy.com/oracle-sql-12c-become-an-sql-developer-with-subtitle/
https://www.udemy.com/sql-advanced/
https://www.udemy.com/sql-for-newbs/
https://www.udemy.com/sql-for-marketers-data-analytics-data-science-big-data/
https://www.udemy.com/sql-for-punk-analytics/
https://www.udemy.com/sql-basics-for-beginners/
https://www.udemy.com/oracle-sql-step-by-step-approach/
https://www.udemy.com/microsoft-sql-for-beginners/
https://www.udemy.com/sql-tutorial-learn-sql-with-mysql-database-beginner2expert/

Webscraping - Python - 无法在html中找到链接

2 个答案: