class_docstr: Mock internal ALE for testing.
code: def __init__(self):
      self.screen_value = 0
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from gym import core
  import numpy
  import tensorflow
  from tf_agents.environments import atari_preprocessing
label_desc: Use image node_id 1 to create a new MockALE object from inherited base classes: object with example: obj = MockALE()