code: def handle_timeout(
      signum: int, frame: Optional[FrameType] = None
  ) -> None:
      global session_timed_out
      session_timed_out = True
      # Call fail() to capture the output of the test.
      pytest.fail("timeout")
  
imports: import os
  import signal
  from types import FrameType
  from typing import Optional
  import pytest
label_desc: Use image node_id 1 for calling a global function with example usage: handle_timeout(signum, frame) without return types