code: def _format_key(key: str) -> str:
      """Internal function for formatting keys."""
      return key.replace("_", " ").title()
  
file_path: acme/acme/utils/loggers/terminal.py
imports: import logging
  import time
  from typing import Any, Callable
  from acme.utils.loggers import base
  import numpy
label_desc: Use image node_id 1 for calling a global function with example usage: _format_key(key) and returns: key