code: def __init__(self, act_dim):
      hidden_dim_1, hidden_dim_2 = 64, 64
      self.fc1 = layers.fc(size=hidden_dim_1, act="tanh")
      self.fc2 = layers.fc(size=hidden_dim_2, act="tanh")
      self.fc3 = layers.fc(size=act_dim, act="tanh")
  
file_path: PARL/examples/tutorials/homework/lesson5/ddpg_quadrotor/quadrotor_model.py
imports: import paddle.fluid
  import parl
  from parl import layers
label_desc: Use image node_id 1 to create a new ActorModel object from inherited base classes: parl with example: obj = ActorModel(act_dim)