code: def concat_tensor_list(tensor_list):
      """Concatenates a list of tensors into one tensor.
  
      Args:
          tensor_list (list[ndarray]): list of tensors.
  
      Return:
          ndarray: Concatenated tensor.
      """
      return np.concatenate(tensor_list, axis=0)
  
imports: import collections
  import numpy
  import tensorflow
label_desc: Use image node_id 12 for calling a global function with example usage: concat_tensor_list(tensor_list) and returns: np