code: def _get_time_str():
      return datetime.now().strftime("%m%d-%H%M%S")
  
file_path: tensorpack/tensorpack/utils/logger.py
imports: import logging
  import os
  import os.path
  import shutil
  import sys
  from datetime import datetime
  from six.moves import input
  from termcolor import colored
label_desc: Use image node_id 2 for calling a global function with example usage: _get_time_str() and returns: datetime