code: def get(self, path):
      
      t = Template(utils.get_asset("file.html"))
      if path is None:
        self.set_status(404)
        self.write("No such file")
        self.finish()
        return
  
      if not utils.check_path(path):
        self.write("Only relative paths are allowed")
        self.set_status(403)
        self.finish()
        return
  
      args = dict(
          filename=path,
          jquery=utils.get_asset("jquery.js"),
          pailer=utils.get_asset("jquery.pailer.js"),
          css=utils.get_asset("bootstrap.css"),
      )
      self.write(t.generate(**args))
      self.finish()
docs: get method