input: 
  def collect_website_links(url: str) -> List[str]:
      """Return a list of all href links found on the given website URL.
      >>> collect_website_links("http://www.example.com/")
      ['http://www.example.com/', 'http://www.iana.org/domains/example']
      """
      import requests as req
      from bs4 import BeautifulSoup
  
      # GET request
      r = req.get(url)
  
      # parse the downloaded homepage and grab all text
      soup = BeautifulSoup(r.text, "html.parser")
  
      # find and collect all links
      links = [link.get('href') for link in soup.find_all('a') if link.get('href')]
  
      return links
  
output:     # Filter out None values and ensure absolute URLs
      from urllib.parse import urljoin
      base_url = r.url
      links = [urljoin(base_url, link) for link in links if link]
      return links