input: from typing import List, Optional
  
  def scrape(url: str) -> Optional[str]:
      """
      Scrapes the content of a given website URL and returns the parsed HTML content.
      If the website cannot be accessed, returns None.
      >>> scrape("https://example.com") is not None
      True
      >>> scrape("https://nonexistentwebsite123.com")
      False
      """
      import requests
      from bs4 import BeautifulSoup
  
      try:
          page = requests.get(url)
          if page.status_code == 200:
              return BeautifulSoup(page.text, 'html.parser')
          else:
              return None
      except requests.exceptions.RequestException:
          return None
output:     import requests
      from bs4 import BeautifulSoup
  
      try:
          page = requests.get(url)
          if page.status_code == 200:
              return BeautifulSoup(page.text, 'html.parser')
          else:
              return None
      except requests.exceptions.RequestException:
          return None