Update example.py to new func

example/config.yaml

@@ -1,7 +1,10 @@
-policy:
+actor:
-  input_dim: 4
-  output_dim: 2
   hidden_sizes: [64, 64]
+  activation_fn: "ReLU"
+
+critic:
+  hidden_sizes: [64, 64]
+  activation_fn: "ReLU"
 
 ppo:
   learning_rate: 3e-4
@@ -15,11 +18,11 @@ ppo:
   eval_interval: 2048
   eval_deterministic: true
   eval_episodes: 10
-  seed: 42
 
 loggers:
-  - type: terminal
+  - backend: 'wandb'
-  - type: wandb
+    logger_name: "ppo"
+    experiment_name: "PPO"
     project: "PPO_project"
     entity: "your_entity"
     push_interval: 10

example/example.py

@@ -1,35 +1,31 @@
 import yaml
 import torch
-from fancy_rl.ppo import PPO
+from ppo import PPO
-from fancy_rl.policy import Policy
+from torchrl.record.loggers import get_logger
-from fancy_rl.loggers import TerminalLogger, WandbLogger
 import gymnasium as gym
 
 def main(config_file):
     with open(config_file, 'r') as file:
         config = yaml.safe_load(file)
 
-    env_fn = lambda: gym.make("CartPole-v1")
+    env_spec = "CartPole-v1"
-    env = env_fn()
-
-    policy_config = config['policy']
-    policy = Policy(env=env, hidden_sizes=policy_config['hidden_sizes'])
 
     ppo_config = config['ppo']
-    loggers_config = config['loggers']
+    actor_config = config['actor']
+    critic_config = config['critic']
+    loggers_config = config.get('loggers', [])
 
-    loggers = []
+    loggers = [get_logger(**logger_config) for logger_config in loggers_config]
-    for logger_config in loggers_config:
-        logger_type = logger_config.pop('type')
-        if logger_type == 'terminal':
-            loggers.append(TerminalLogger(**logger_config))
-        elif logger_type == 'wandb':
-            loggers.append(WandbLogger(**logger_config))
 
-    ppo = PPO(policy=policy,
+    ppo = PPO(
-              env_fn=env_fn,
+        env_spec=env_spec,
-              loggers=loggers,
+        loggers=loggers,
-              **ppo_config)
+        actor_hidden_sizes=actor_config['hidden_sizes'],
+        critic_hidden_sizes=critic_config['hidden_sizes'],
+        actor_activation_fn=actor_config['activation_fn'],
+        critic_activation_fn=critic_config['activation_fn'],
+        **ppo_config
+    )
 
     ppo.train()