code: def __init__(self, obs_dim, act_dim):
      super(Model, self).__init__()
      self.actor_model = Actor(obs_dim, act_dim)
      self.critic_model = Critic(obs_dim, act_dim)
  
file_path: PARL/examples/tutorials/parl2_dygraph/lesson5/ddpg/model.py
imports: import parl
  import paddle
  import paddle.nn
  import paddle.nn.functional
label_desc: Use image node_id 1 to create a new Model object from inherited base classes: parl with example: obj = Model(obs_dim, act_dim)