class_docstr: Usage:
  
      selector = selectors.SelectSelector()
      loop = asyncio.SelectorEventLoop(InputHookSelector(selector, inputhook))
      asyncio.set_event_loop(loop)
class_docstr_tok: ["Usage",":","selector","=","selectors.SelectSelector","(",")","loop","=","asyncio.SelectorEventLoop","(","InputHookSelector","(","selector",",","inputhook",")",")","asyncio.set_event_loop","(","loop",")"]
code: def select(
      self, timeout: float | None = None
  ) -> list[tuple[SelectorKey, _EventMask]]:
      # If there are tasks in the current event loop,
      # don't run the input hook.
      if len(getattr(get_running_loop(), "_ready", [])) > 0:
          return self.selector.select(timeout=timeout)
  
      ready = False
      result = None
  
      # Run selector in other thread.
      def run_selector() -> None:
          nonlocal ready, result
          result = self.selector.select(timeout=timeout)
          os.write(self._w, b"x")
          ready = True
  
      th = threading.Thread(target=run_selector)
      th.start()
  
      def input_is_ready() -> bool:
          return ready
  
      # Call inputhook.
      # The inputhook function is supposed to return when our selector
      # becomes ready. The inputhook can do that by registering the fd in its
      # own loop, or by checking the `input_is_ready` function regularly.
      self.inputhook(InputHookContext(self._r, input_is_ready))
  
      # Flush the read end of the pipe.
      try:
          # Before calling 'os.read', call select.select. This is required
          # when the gevent monkey patch has been applied. 'os.read' is never
          # monkey patched and won't be cooperative, so that would block all
          # other select() calls otherwise.
          # See: http://www.gevent.org/gevent.os.html
  
          # Note: On Windows, this is apparently not an issue.
          #       However, if we would ever want to add a select call, it
          #       should use `windll.kernel32.WaitForMultipleObjects`,
          #       because `select.select` can't wait for a pipe on Windows.
          if sys.platform != "win32":
              select.select([self._r], [], [], None)
  
          os.read(self._r, 1024)
      except OSError:
          # This happens when the window resizes and a SIGWINCH was received.
          # We get 'Error: [Errno 4] Interrupted system call'
          # Just ignore.
          pass
  
      # Wait for the real selector to be done.
      th.join()
      assert result is not None
      return result
  
imports: from __future__ import annotations
  import asyncio
  import os
  import select
  import selectors
  import sys
  import threading
  from asyncio import AbstractEventLoop, get_running_loop
  from selectors import BaseSelector, SelectorKey
  from typing import TYPE_CHECKING, Any, Callable, Mapping
label_desc: Use image node_id 5 for calling the InputHookSelector obj's underlying member method code with example usage: obj.select(timeout) and returns: result, self, ready