Add per (#8)

* Add per and modify etc

* Replace pre-commit-config.yaml and add pre-commit hook in .git

* Modify .gitignore

* Modify .gitignore

* Modify buffer and code

* Modify replay buffer and per

* Modify .gitignore

scripts/algorithms/common/helper_functions.py

@@ -5,6 +5,10 @@
 - Contact: curt.park@medipixel.io
 """
 
+import random
+
+import gym
+import numpy as np
 import torch
 import torch.nn as nn
 
@@ -18,3 +22,11 @@ def soft_update(local: nn.Module, target: nn.Module, tau: float):
     """Soft-update: target = tau*local + (1-tau)*target."""
     for t_param, l_param in zip(target.parameters(), local.parameters()):
         t_param.data.copy_(tau * l_param.data + (1.0 - tau) * t_param.data)
+
+
+def set_random_seed(seed: int, env: gym.Env):
+    """Set random seed"""
+    env.seed(seed)
+    torch.manual_seed(seed)
+    np.random.seed(seed)
+    random.seed(seed)