input: Write a function to extract URLs from a Google search result page.
  assert extract_urls('https://www.google.com/search?q=best+budget+laptop') == ['list_of_urls']
output: def extract_urls(google_search_url):
      import requests
      from bs4 import BeautifulSoup
  
      response = requests.get(google_search_url)
      soup = BeautifulSoup(response.text, 'html.parser')
  
      urls = []
      for link in soup.find_all('a'):
          href = link.get('href')
          if href and '/url?q=' in href:
              url = href.split('/url?q=')[1].split('&')[0]
              urls.append(url)
  
      return urls