code: def establish_args():
      parser = argparse.ArgumentParser()
      parser.add_argument("--env_name", default="Walker2d-v2", type=str)
      parser.add_argument("--memory_size", default=1e6, type=float)
      parser.add_argument("--batch_size", default=64, type=int)
      parser.add_argument("--n_epoch", default=500, type=int)
      parser.add_argument("--rollout_per_epoch", default=100, type=int)
      parser.add_argument("--train_per_epoch", default=100, type=int)
      args = parser.parse_args()
      return args
  
imports: import argparse
  import gym
  from ddpg import DDPG
  from train_test_utils import train_pipeline_conservative, test
label_desc: Use image node_id 1 for calling a global function with example usage: establish_args() and returns: args