code: def summary_dict(accuracies):
      return {
          "last%02d" % x: np.median(accuracies[-x:])
          for x in [1, 10, 20, 50]
      }
  
imports: import json
  import os
  import numpy
  import tensorflow
  from absl import app, flags
label_desc: Use image node_id 1 for calling a global function with example usage: summary_dict(accuracies) and returns: unknown