code: def rand_list(shape, length=ts, mult=10):
      """Return list with `length` random ndarrays of shape `shape`."""
      return [create_data(shape, mult=mult) for _ in range(length)]
  
file_path: sktime/sktime/transformations/series/tests/test_kalman_filter.py
imports: import numpy
  import pytest
  from numpy.testing import assert_array_almost_equal
  from sktime.transformations.series.kalman_filter import KalmanFilterTransformerFP, KalmanFilterTransformerPK
  from sktime.utils.validation._dependencies import _check_soft_dependencies
label_desc: Use image node_id 2 for calling a global function with example usage: rand_list(shape, length, mult) and returns: unknown