Google搜索结果解析不起作用？

如何解决Google搜索结果解析不起作用？

如何解析Google搜索

import requests,webbrowser
from bs4 import BeautifulSoup

userResearch = input('Enter what to search:')
print('Searching...')

searcher = requests.get("https://www.google.com/search?q="+userResearch)
soup = BeautifulSoup(searcher.text,'html.parser')
search_result = soup.select('.r a')
for res in search_result:
    print(res)

但是结果是它什么都不显示。如果没有for循环，它只会显示[]