code: def send_head(self):
          
          path = self.translate_path(self.path)
          f = None
          if os.path.isdir(path):
              if not self.path.endswith('/'):
                  # redirect browser - doing basically what apache does
                  self.send_response(301)
                  self.send_header("Location", self.path + "/")
                  self.end_headers()
                  return None
              for index in "index.html", "index.htm":
                  index = os.path.join(path, index)
                  if os.path.exists(index):
                      path = index
                      break
              else:
                  return self.list_directory(path)
          ctype = self.guess_type(path)
          try:
              f = open(path, 'rb')
          except IOError:
              self.send_error(404, "File not found")
              return None
          self.send_response(200)
          self.send_header("Content-type", ctype)
          fs = os.fstat(f.fileno())
          self.send_header("Content-Length", str(fs[6]))
          self.send_header("Last-Modified", self.date_time_string(fs.st_mtime))
          self.end_headers()
          return f
docs: Common code for GET and HEAD commands.
  
          This sends the response code and MIME headers.
  
          Return value is either a file object (which has to be copied
          to the outputfile by the caller unless the command was HEAD,
          and must be closed by the caller under all circumstances), or
          None, in which case the caller has nothing further to do.