code: def extend_array(a, n):
      
      a_new = a.copy()
      for d in range(a.ndim):
          a_new = np.repeat(a_new, n, axis=d)
      return a_new
docs: Increase the resolution of an array by duplicating its values to fill
      a larger array.
  
      Parameters
      ----------
      a: array, shape (a1, a2, a3, ...)
      n: integer
          Factor by which to expand the array.
  
      Returns
      -------
      ae: array, shape (n * a1, n * a2, n * a3, ...)