code: def is_dist_avail_and_initialized():
      """检查是否支持分布式环境"""
      if not dist.is_available():
          return False
      if not dist.is_initialized():
          return False
      return True
  
file_path: deep-learning-for-image-processing/pytorch_classification/mini_imagenet/multi_train_utils/distributed_utils.py
imports: import os
  import torch
  import torch.distributed
label_desc: Use image node_id 3 for calling a global function with example usage: is_dist_avail_and_initialized() and returns: True, False, False