Refactoring demo collector (#56)

scripts/algorithms/common/abstract/agent.py

@@ -80,7 +80,7 @@ class AbstractAgent(object):
         path = os.path.join("./save/" + save_name + "_ep_" + str(n_episode) + ".pt")
         torch.save(params, path)
 
-        print ("[INFO] Saved the model and optimizer to", path)
+        print("[INFO] Saved the model and optimizer to", path)
 
     @abstractmethod
     def write_log(self, *args):
@@ -109,7 +109,7 @@ class AbstractAgent(object):
                 score += reward
                 step += 1
 
-            print (
+            print(
                 "[INFO] episode %d\tstep: %d\ttotal score: %d"
                 % (i_episode, step, score)
             )