text: import numpy as np
  
  class Ensembler(object):
      """
      Iterates through multiple directories of predicted activation maps
      and averages them. The ensembled results are saved in a separate
      directory, `out_dir`.
      * Assumes the predicted activation maps are called `pred_act.npy`
      in their respective case directories.
      """
      def __init__(self):
          pass
  