code: def _sigshow(_, frame: Optional["FrameType"]) -> None:
      import sys
      from shutil import get_terminal_size
      from traceback import format_stack
  
      lines = "\u2015" * get_terminal_size().columns
      stack = format_stack(frame)
      print(lines, "\n", *stack, lines, sep="", file=sys.stderr)
  
file_path: dvc/dvc/_debug.py
imports: from contextlib import ExitStack, contextmanager
  from datetime import datetime
  from typing import TYPE_CHECKING, Callable, Optional, Union
label_desc: Use image node_id 6 for calling a global function with example usage: _sigshow(_, frame) without return types