update PolicyGradient

codes/PolicyGradient/utils.py

@@ -0,0 +1,29 @@
+#!/usr/bin/env python
+# coding=utf-8
+'''
+Author: John
+Email: johnjim0816@gmail.com
+Date: 2020-11-23 13:44:52
+LastEditor: John
+LastEditTime: 2020-11-23 13:45:42
+Discription: 
+Environment: 
+'''
+import os
+import numpy as np
+
+
+def save_results(rewards,moving_average_rewards,tag='train',result_path='./result'):
+    '''保存reward等结果
+    '''
+    if not os.path.exists(result_path): # 检测是否存在文件夹
+        os.mkdir(result_path)
+    np.save(result_path+'rewards_'+tag+'.npy', rewards)
+    np.save(result_path+'moving_average_rewards_'+tag+'.npy', moving_average_rewards)
+    print('results saved!')
+
+def save_model(agent,model_path='./saved_model'):
+    if not os.path.exists(model_path): # 检测是否存在文件夹
+        os.mkdir(model_path)
+    agent.save_model(model_path+'checkpoint.pth')
+    print('model saved！')