input: Write a python function to extract and return all the hyperlinks from a given Wikipedia page.
  assert extract_hyperlinks('https://en.wikipedia.org/wiki/Web_crawler')[:3] == ['/wiki/Wikipedia:Protection_policy#semi', '/wiki/File:Internet_map_1024.jpg', '/wiki/File:Internet_map_1024.jpg']
  assert len(extract_hyperlinks('https://en.wikipedia.org/wiki/Web_crawler')) > 0
  assert isinstance(extract_hyperlinks('https://en.wikipedia.org/wiki/Web_crawler'), list)
output: def extract_hyperlinks(url):
      import requests
      from bs4 import BeautifulSoup
  
      response = requests.get(url)
      soup = BeautifulSoup(response.content, 'html.parser')
      links = []
  
      for a_tag in soup.find_all('a', href=True):
          href = a_tag['href']
          if href.startswith('/wiki/'):
              links.append(href)
  
      return links