to show image data read from file and create new figure

import yamlfrom PIL import Image#import matplotlib.pyplot as plt #to show image data read from file and create new figuredef dqn_demo():    ”’    Code to load example configuration file, then run DQN on it.    For more info: https://arxiv.org/pdf/1509.06463v1.pdf    ”’    filename=’./config.yaml’    with open(filename,’r’) as stream:        cfg=yaml.safe_load(stream)        #print(‘cfg:n’,cfg)                #load a test image here so that we have something to feed into our network.        if ‘test_image_file’ not in cfg or cfg[‘test_image_file’] == ”:            print(‘Error: there is no test image available!’)            raise Exception()        img_in =Image.open(cfg[‘test_image_file’])                #make an input numpy array