code: def predict(self, obs):
      feed = {"obs": obs}
      act = self.pred_pe.run(
          feed=[feed], fetch_list=[self.pred_act.name]
      )[0]
      return act
  
file_path: PARL/examples/NeurIPS2019-Learn-to-Move-Challenge/opensim_agent.py
imports: import parl
  import numpy
  from parl import layers
  from parl.utils import machine_info
  from paddle import fluid
label_desc: Use image node_id 3 for calling the OpenSimAgent obj's underlying member method code with example usage: obj.predict(obs) and returns: act