code: def invoke_shell(
          self,
          term="vt100",
          width=80,
          height=24,
          width_pixels=0,
          height_pixels=0,
          environment=None,
      ):
          
          chan = self._transport.open_session()
          chan.get_pty(term, width, height, width_pixels, height_pixels)
          chan.invoke_shell()
          return chan
docs: Start an interactive shell session on the SSH server.  A new `.Channel`
          is opened and connected to a pseudo-terminal using the requested
          terminal type and size.
  
          :param str term:
              the terminal type to emulate (for example, ``"vt100"``)
          :param int width: the width (in characters) of the terminal window
          :param int height: the height (in characters) of the terminal window
          :param int width_pixels: the width (in pixels) of the terminal window
          :param int height_pixels: the height (in pixels) of the terminal window
          :param dict environment: the command's environment
          :return: a new `.Channel` connected to the remote shell
  
          :raises: `.SSHException` -- if the server fails to invoke a shell