class_docstr: Typical usage:
  
  ::
  
      output = Vt100_Output.from_pty(sys.stdout)
      r = Renderer(style, output)
      r.render(app, layout=...)
class_docstr_tok: ["Typical","usage",":",":",":","output","=","Vt100_Output.from_pty","(","sys.stdout",")","r","=","Renderer","(","style",",","output",")","r.render","(","app",",","layout=","...",")"]
docstr: Waiting for CPR flag. True when we send the request, but didn't got a
  response.
docstr_tok: ["Waiting","for","CPR","flag",".","True","when","we","send","the","request",",","but","did","n't","got","a","response","."]
code: def waiting_for_cpr(self) -> bool:
      """
      Waiting for CPR flag. True when we send the request, but didn't got a
      response.
      """
      return bool(self._waiting_for_cpr_futures)
  
imports: from __future__ import annotations
  from asyncio import FIRST_COMPLETED, Future, ensure_future, sleep, wait
  from collections import deque
  from enum import Enum
  from typing import TYPE_CHECKING, Any, Callable, Dict, Hashable
  from prompt_toolkit.application.current import get_app
  from prompt_toolkit.cursor_shapes import CursorShape
  from prompt_toolkit.data_structures import Point, Size
  from prompt_toolkit.filters import FilterOrBool, to_filter
  from prompt_toolkit.formatted_text import AnyFormattedText, to_formatted_text
  from prompt_toolkit.layout.mouse_handlers import MouseHandlers
  from prompt_toolkit.layout.screen import Char, Screen, WritePosition
  from prompt_toolkit.output import ColorDepth, Output
  from prompt_toolkit.styles import Attrs, BaseStyle, DummyStyleTransformation, StyleTransformation
label_desc: Use image node_id 8 for calling the Renderer obj's underlying member method code with example usage: obj.waiting_for_cpr() and returns: bool