code: def force_cpu():
      """Force CPU on a GPU system"""
  
      import tensorflow.keras.backend as K
      import tensorflow as tf
  
      config = tf.compat.v1.ConfigProto(device_count={"GPU": 0})
      session = tf.compat.v1.Session(config=config)
      tf.compat.v1.keras.backend.set_session(session)
  
label_desc: Use image node_id 3 for calling a global function with example usage: force_cpu() without return types