update save and load

rl/experience.py

@@ -43,13 +43,13 @@ class ExperienceBuffer:
         self.rewards = rewards
         self.advantages = advantages
 
-    def save(self, filename):
-        with open(filename, 'wb') as f:
+    def save(self, file_path):
+        with open(file_path, 'wb') as f:
             pickle.dump((self.states, self.actions, self.rewards, self.advantages), f)
 
     @classmethod
-    def load(cls, filename):
-        with open(filename, 'rb') as f:
+    def load(cls, file_path):
+        with open(file_path, 'rb') as f:
             states, actions, rewards, advantages = pickle.load(f)
         return cls(
             states=states,