code: def count_params(model: nn.Module) -> int:
      """
      Count the number of parameters in a model.
      """
      assert isinstance(model, nn.Module)
      return sum(
          (parameter.nelement() for parameter in model.parameters())
      )
  
imports: import collections.abc
  import logging
  import operator
  from typing import Any, Callable, Dict, List, Optional, Tuple, Union
  import torch
  import torch.nn
  from classy_vision.generic.util import eval_model, get_batchsize_per_replica, get_model_dummy_input, is_leaf, is_on_gpu
  from torch.cuda import cudart
label_desc: Use image node_id 12 for calling a global function with example usage: count_params(model) and returns: sum