code: def describe(path):
      
      if os.path.islink(path):
          return 'symbolic link'
      elif os.path.isdir(path):
          if path == '.':
              return 'directory'
          elif path == '..':
              return 'directory'
          else:
              if os.path.basename(path) == '.':
                  return "'.' directory"
              elif os.path.basename(path) == '..':
                  return "'..' directory"
              else:
                  return 'directory'
      elif os.path.isfile(path):
          if os.path.getsize(path) == 0:
              return 'regular empty file'
          else:
              return 'regular file'
      elif not os.path.exists(path):
          return 'non existent'
      else:
          return 'entry'
docs: Return a textual description of the file pointed by this path.
      Options:
       - "symbolic link"
       - "directory"
       - "'.' directory"
       - "'..' directory"
       - "regular file"
       - "regular empty file"
       - "non existent"
       - "entry"