from tensorflow.train import NewCheckpointReader

def read_checkpoint(fp_ckpt, key):
  reader = NewCheckpointReader(fp_ckpt)
  # var_to_shape_map = reader.get_variable_to_shape_map()
  # var_to_dtype_map = reader.get_variable_to_dtype_map()
  # for key, value in sorted(var_to_shape_map.items()):
  #   print("tensor: %s (%s) %s" % (key, var_to_dtype_map[key].name, value))
  #   print(reader.get_tensor(key))
  return reader.get_tensor(key)