code: def show_images(filepath):
      with open(filepath, "rb") as f:
          imgs = pickle.load(f)
          r, c = 5, 5
          fig, axs = plt.subplots(5, 5)
          cnt = 0
          for i in range(r):
              for j in range(c):
                  axs[i, j].imshow(imgs[cnt, :, :, 0], cmap="gray")
                  axs[i, j].axis("off")
                  cnt += 1
          plt.show()
  
file_path: singa/examples/gan/utils.py
imports: import gzip
  import matplotlib.pyplot
  import numpy
  import os
  import pickle
  import sys
  import time
label_desc: Use image node_id 4 for calling a global function with example usage: show_images(filepath) without return types