code: def _ensure_var_is_initialized(var, name):
      """Make sure the input variable is not None."""
      assert var is not None, "{} is not initialized.".format(name)
  
imports: import os
  import sys
  import time
  import torch
  from apex.transformer.microbatches import build_num_microbatches_calculator
  from .arguments import parse_args
label_desc: Use image node_id 14 for calling a global function with example usage: _ensure_var_is_initialized(var, name) without return types