code: def get_time_str():
      return time.strftime("%Y%m%d_%H%M%S", time.localtime())
  
file_path: lavis/lavis/common/annotator/uniformer/mmcv/runner/utils.py
imports: import os
  import random
  import sys
  import time
  import warnings
  from getpass import getuser
  from socket import gethostname
  import numpy
  import torch
  import annotator.uniformer.mmcv
label_desc: Use image node_id 2 for calling a global function with example usage: get_time_str() and returns: time