update

codes/A2C/a2c.py

@@ -5,10 +5,11 @@ Author: JiangJi
 Email: johnjim0816@gmail.com
 Date: 2021-05-03 22:16:08
 LastEditor: JiangJi
-LastEditTime: 2021-05-03 22:23:48
+LastEditTime: 2022-07-20 23:54:40
 Discription: 
 Environment: 
 '''
+import torch
 import torch.optim as optim
 import torch.nn as nn
 import torch.nn.functional as F
@@ -42,7 +43,7 @@ class A2C:
     '''
     def __init__(self,n_states,n_actions,cfg) -> None:
         self.gamma = cfg.gamma
-        self.device = cfg.device
+        self.device = torch.device(cfg.device)
         self.model = ActorCritic(n_states, n_actions, cfg.hidden_size).to(self.device)
         self.optimizer = optim.Adam(self.model.parameters())
 

codes/A2C/outputs/CartPole-v0/20220713-221850/results/params.json

@@ -0,0 +1,14 @@
+{
+    "algo_name": "A2C",
+    "env_name": "CartPole-v0",
+    "n_envs": 8,
+    "max_steps": 20000,
+    "n_steps": 5,
+    "gamma": 0.99,
+    "lr": 0.001,
+    "hidden_dim": 256,
+    "deivce": "cpu",
+    "result_path": "C:\\Users\\24438\\Desktop\\rl-tutorials/outputs/CartPole-v0/20220713-221850/results/",
+    "model_path": "C:\\Users\\24438\\Desktop\\rl-tutorials/outputs/CartPole-v0/20220713-221850/models/",
+    "save_fig": true
+}

codes/A2C/outputs/CartPole-v0/20220713-221850/results/params.txt

@@ -1,14 +0,0 @@
------------------- start ------------------
-algo_name : A2C
-env_name : CartPole-v0
-n_envs : 8
-max_steps : 30000
-n_steps : 5
-gamma : 0.99
-lr : 0.001
-hidden_dim : 256
-result_path : c:\Users\24438\Desktop\rl-tutorials\codes\A2C/outputs/CartPole-v0/20220713-221850/results/
-model_path : c:\Users\24438\Desktop\rl-tutorials\codes\A2C/outputs/CartPole-v0/20220713-221850/models/
-save_fig : True
-device : cuda
-------------------- end -------------------

codes/A2C/task0.py

@@ -29,14 +29,13 @@ def get_args():
     parser.add_argument('--gamma',default=0.99,type=float,help="discounted factor")
     parser.add_argument('--lr',default=1e-3,type=float,help="learning rate")
     parser.add_argument('--hidden_dim',default=256,type=int)
+    parser.add_argument('--device',default='cpu',type=str,help="cpu or cuda") 
     parser.add_argument('--result_path',default=curr_path + "/outputs/" + parser.parse_args().env_name + \
             '/' + curr_time + '/results/' )
     parser.add_argument('--model_path',default=curr_path + "/outputs/" + parser.parse_args().env_name + \
             '/' + curr_time + '/models/' ) # path to save models
     parser.add_argument('--save_fig',default=True,type=bool,help="if save figure or not")           
-    args = parser.parse_args()    
+    args = parser.parse_args()                        
-    args.device = torch.device(
-            "cuda" if torch.cuda.is_available() else "cpu")  # check GPU                        
     return args
 
 def make_envs(env_name):

codes/DDPG/ddpg.py

@@ -73,11 +73,11 @@ class Critic(nn.Module):
         return x
 class DDPG:
     def __init__(self, n_states, n_actions, cfg):
-        self.device = cfg.device
+        self.device = torch.device(cfg.device)
-        self.critic = Critic(n_states, n_actions, cfg.hidden_dim).to(cfg.device)
+        self.critic = Critic(n_states, n_actions, cfg.hidden_dim).to(self.device)
-        self.actor = Actor(n_states, n_actions, cfg.hidden_dim).to(cfg.device)
+        self.actor = Actor(n_states, n_actions, cfg.hidden_dim).to(self.device)
-        self.target_critic = Critic(n_states, n_actions, cfg.hidden_dim).to(cfg.device)
+        self.target_critic = Critic(n_states, n_actions, cfg.hidden_dim).to(self.device)
-        self.target_actor = Actor(n_states, n_actions, cfg.hidden_dim).to(cfg.device)
+        self.target_actor = Actor(n_states, n_actions, cfg.hidden_dim).to(self.device)
 
         # 复制参数到目标网络
         for target_param, param in zip(self.target_critic.parameters(), self.critic.parameters()):

codes/DDPG/outputs/Pendulum-v1/20220713-225402/results/params.json

@@ -0,0 +1,18 @@
+{
+    "algo_name": "DDPG",
+    "env_name": "Pendulum-v1",
+    "train_eps": 300,
+    "test_eps": 20,
+    "gamma": 0.99,
+    "critic_lr": 0.001,
+    "actor_lr": 0.0001,
+    "memory_capacity": 8000,
+    "batch_size": 128,
+    "target_update": 2,
+    "soft_tau": 0.01,
+    "hidden_dim": 256,
+    "deivce": "cpu",
+    "result_path": "C:\\Users\\24438\\Desktop\\rl-tutorials/outputs/DDPG/outputs/Pendulum-v1/20220713-225402/results//",
+    "model_path": "C:\\Users\\24438\\Desktop\\rl-tutorials/outputs/DDPG/outputs/Pendulum-v1/20220713-225402/models/",
+    "save_fig": true
+}

codes/DDPG/outputs/Pendulum-v1/20220713-225402/results/params.txt

@@ -1,18 +0,0 @@
------------------- start ------------------
-algo_name : DDPG
-env_name : Pendulum-v1
-train_eps : 300
-test_eps : 20
-gamma : 0.99
-critic_lr : 0.001
-actor_lr : 0.0001
-memory_capacity : 8000
-batch_size : 128
-target_update : 2
-soft_tau : 0.01
-hidden_dim : 256
-result_path : c:\Users\24438\Desktop\rl-tutorials\codes\DDPG/outputs/Pendulum-v1/20220713-225402/results/
-model_path : c:\Users\24438\Desktop\rl-tutorials\codes\DDPG/outputs/Pendulum-v1/20220713-225402/models/
-save_fig : True
-device : cuda
-------------------- end -------------------

codes/DDPG/task0.py

@@ -5,7 +5,7 @@
 @Email: johnjim0816@gmail.com
 @Date: 2020-06-11 20:58:21
 @LastEditor: John
-LastEditTime: 2022-07-13 22:53:11
+LastEditTime: 2022-07-21 00:05:41
 @Discription: 
 @Environment: python 3.7.7
 '''
@@ -41,14 +41,13 @@ def get_args():
     parser.add_argument('--target_update',default=2,type=int)
     parser.add_argument('--soft_tau',default=1e-2,type=float)
     parser.add_argument('--hidden_dim',default=256,type=int)
+    parser.add_argument('--device',default='cpu',type=str,help="cpu or cuda") 
     parser.add_argument('--result_path',default=curr_path + "/outputs/" + parser.parse_args().env_name + \
             '/' + curr_time + '/results/' )
     parser.add_argument('--model_path',default=curr_path + "/outputs/" + parser.parse_args().env_name + \
             '/' + curr_time + '/models/' ) # path to save models
-    parser.add_argument('--save_fig',default=True,type=bool,help="if save figure or not")           
+    parser.add_argument('--save_fig',default=True,type=bool,help="if save figure or not")   
-    args = parser.parse_args()    
+    args = parser.parse_args()                           
-    args.device = torch.device(
-            "cuda" if torch.cuda.is_available() else "cpu")  # check GPU                        
     return args
 
 def env_agent_config(cfg,seed=1):
@@ -122,11 +121,11 @@ if __name__ == "__main__":
     save_args(cfg)
     agent.save(path=cfg.model_path)
     save_results(rewards, ma_rewards, tag='train', path=cfg.result_path)
-    plot_rewards(rewards, ma_rewards, cfg, tag="train")  # 画出结果
+    plot_rewards(rewards, ma_rewards, cfg, tag="train")  
     # testing
     env,agent = env_agent_config(cfg,seed=10)
     agent.load(path=cfg.model_path)
     rewards,ma_rewards = test(cfg,env,agent)
     save_results(rewards,ma_rewards,tag = 'test',path = cfg.result_path)
-    plot_rewards(rewards, ma_rewards, cfg, tag="test")  # 画出结果
+    plot_rewards(rewards, ma_rewards, cfg, tag="test")  
 

codes/DQN/dqn.py

@@ -5,7 +5,7 @@
 @Email: johnjim0816@gmail.com
 @Date: 2020-06-12 00:50:49
 @LastEditor: John
-LastEditTime: 2022-07-13 00:08:18
+LastEditTime: 2022-07-20 23:57:16
 @Discription: 
 @Environment: python 3.7.7
 '''
@@ -64,8 +64,8 @@ class ReplayBuffer:
 class DQN:
     def __init__(self, n_states,n_actions,cfg):
 
-        self.n_actions = n_actions  # 总的动作个数
+        self.n_actions = n_actions  
-        self.device = cfg.device  # 设备，cpu或gpu等
+        self.device = torch.device(cfg.device)  # cpu or cuda
         self.gamma = cfg.gamma  # 奖励的折扣因子
         # e-greedy策略相关参数
         self.frame_idx = 0  # 用于epsilon的衰减计数

codes/DQN/outputs/CartPole-v0/20220713-211653/results/params.json

@@ -0,0 +1,19 @@
+{
+    "algo_name": "DQN",
+    "env_name": "CartPole-v0",
+    "train_eps": 200,
+    "test_eps": 20,
+    "gamma": 0.95,
+    "epsilon_start": 0.95,
+    "epsilon_end": 0.01,
+    "epsilon_decay": 500,
+    "lr": 0.0001,
+    "memory_capacity": 100000,
+    "batch_size": 64,
+    "target_update": 4,
+    "hidden_dim": 256,
+    "deivce": "cpu",
+    "result_path": "C:\\Users\\24438\\Desktop\\rl-tutorials/outputs/CartPole-v0/20220713-211653/results/",
+    "model_path": "C:\\Users\\24438\\Desktop\\rl-tutorials/outputs/CartPole-v0/20220713-211653/models/",
+    "save_fig": true
+}

codes/DQN/outputs/CartPole-v0/20220713-211653/results/params.txt

@@ -1,19 +0,0 @@
------------------- start ------------------
-algo_name : DQN
-env_name : CartPole-v0
-train_eps : 200
-test_eps : 20
-gamma : 0.95
-epsilon_start : 0.95
-epsilon_end : 0.01
-epsilon_decay : 500
-lr : 0.0001
-memory_capacity : 100000
-batch_size : 64
-target_update : 4
-hidden_dim : 256
-result_path : C:\Users\24438\Desktop\rl-tutorials\codes\DQN/outputs/CartPole-v0/20220713-211653/results/
-model_path : C:\Users\24438\Desktop\rl-tutorials\codes\DQN/outputs/CartPole-v0/20220713-211653/models/
-save_fig : True
-device : cuda
-------------------- end -------------------

codes/DQN/task0.py

@@ -1,12 +1,9 @@
-from lib2to3.pytree import type_repr
+import sys,os
-import sys
+curr_path = os.path.dirname(os.path.abspath(__file__))  # current path
-import os
+parent_path = os.path.dirname(curr_path)  # parent path
-from parso import parse
+sys.path.append(parent_path)  # add to system path
 import torch.nn as nn
 import torch.nn.functional as F
-curr_path = os.path.dirname(os.path.abspath(__file__))  # 当前文件所在绝对路径
-parent_path = os.path.dirname(curr_path)  # 父路径
-sys.path.append(parent_path)  # 添加路径到系统路径
 
 import gym
 import torch
@@ -35,14 +32,13 @@ def get_args():
     parser.add_argument('--batch_size',default=64,type=int)
     parser.add_argument('--target_update',default=4,type=int)
     parser.add_argument('--hidden_dim',default=256,type=int)
+    parser.add_argument('--device',default='cpu',type=str,help="cpu or cuda") 
     parser.add_argument('--result_path',default=curr_path + "/outputs/" + parser.parse_args().env_name + \
             '/' + curr_time + '/results/' )
     parser.add_argument('--model_path',default=curr_path + "/outputs/" + parser.parse_args().env_name + \
             '/' + curr_time + '/models/' ) # path to save models
     parser.add_argument('--save_fig',default=True,type=bool,help="if save figure or not")           
-    args = parser.parse_args()    
+    args = parser.parse_args()                          
-    args.device = torch.device(
-            "cuda" if torch.cuda.is_available() else "cpu")  # check GPU                        
     return args
 
 def env_agent_config(cfg,seed=1):

codes/DoubleDQN/double_dqn.py

@@ -5,7 +5,7 @@
 @Email: johnjim0816@gmail.com
 @Date: 2020-06-12 00:50:49
 @LastEditor: John
-LastEditTime: 2021-11-19 18:07:09
+LastEditTime: 2022-07-21 00:08:26
 @Discription: 
 @Environment: python 3.7.7
 '''
@@ -65,7 +65,7 @@ class MLP(nn.Module):
 class DoubleDQN:
     def __init__(self, n_states, n_actions, cfg):
         self.n_actions = n_actions  # 总的动作个数
-        self.device = cfg.device  # 设备，cpu或gpu等
+        self.device = torch.device(cfg.device)  # 设备，cpu或gpu等
         self.gamma = cfg.gamma
         # e-greedy策略相关参数
         self.actions_count = 0
@@ -88,8 +88,7 @@ class DoubleDQN:
         '''选择动作
         '''
         self.actions_count += 1
-        self.epsilon = self.epsilon_end + (self.epsilon_start - self.epsilon_end) * \
+        self.epsilon = self.epsilon_end + (self.epsilon_start - self.epsilon_end) * math.exp(-1. * self.actions_count / self.epsilon_decay)
-            math.exp(-1. * self.actions_count / self.epsilon_decay)
         if random.random() > self.epsilon:
             with torch.no_grad():
                 # 先转为张量便于丢给神经网络,state元素数据原本为float64

codes/DoubleDQN/outputs/CartPole-v0/20220721-000842/results/params.json

@@ -0,0 +1 @@
+{"algo_name": "DoubleDQN", "env_name": "CartPole-v0", "train_eps": 200, "test_eps": 20, "gamma": 0.99, "epsilon_start": 0.95, "epsilon_end": 0.01, "epsilon_decay": 500, "lr": 0.0001, "memory_capacity": 100000, "batch_size": 64, "target_update": 2, "hidden_dim": 256, "device": "cuda", "result_path": "C:\\Users\\24438\\Desktop\\rl-tutorials\\codes\\DoubleDQN/outputs/CartPole-v0/20220721-000842/results/", "model_path": "C:\\Users\\24438\\Desktop\\rl-tutorials\\codes\\DoubleDQN/outputs/CartPole-v0/20220721-000842/models/", "save_fig": true}

codes/DoubleDQN/task0.py

@@ -5,55 +5,49 @@ Author: JiangJi
 Email: johnjim0816@gmail.com
 Date: 2021-11-07 18:10:37
 LastEditor: JiangJi
-LastEditTime: 2021-12-29 15:02:30
+LastEditTime: 2022-07-21 00:08:38
 Discription: 
 '''
-
 import sys,os
-curr_path = os.path.dirname(os.path.abspath(__file__)) # 当前文件所在绝对路径
+curr_path = os.path.dirname(os.path.abspath(__file__))  # current path
-parent_path = os.path.dirname(curr_path) # 父路径
+parent_path = os.path.dirname(curr_path)  # parent path
-sys.path.append(parent_path) # 添加路径到系统路径
+sys.path.append(parent_path)  # add to system path
 
 import gym
 import torch
 import datetime
+import argparse
 
-from common.utils import save_results, make_dir
+from common.utils import save_results,make_dir
-from common.utils import plot_rewards
+from common.utils import plot_rewards,save_args
 from DoubleDQN.double_dqn import DoubleDQN
 
-curr_time = datetime.datetime.now().strftime("%Y%m%d-%H%M%S")  # 获取当前时间
+def get_args():
-
+    """ Hyperparameters
-class Config:
+    """
-    def __init__(self):
+    curr_time = datetime.datetime.now().strftime("%Y%m%d-%H%M%S")  # Obtain current time
-        ################################## 环境超参数 ###################################
+    parser = argparse.ArgumentParser(description="hyperparameters")      
-        self.algo_name = 'DoubleDQN' # 算法名称
+    parser.add_argument('--algo_name',default='DoubleDQN',type=str,help="name of algorithm")
-        self.env_name = 'CartPole-v0'  # 环境名称
+    parser.add_argument('--env_name',default='CartPole-v0',type=str,help="name of environment")
-        self.device = torch.device(
+    parser.add_argument('--train_eps',default=200,type=int,help="episodes of training")
-            "cuda" if torch.cuda.is_available() else "cpu")  # 检测GPU
+    parser.add_argument('--test_eps',default=20,type=int,help="episodes of testing")
-        self.train_eps = 200  # 训练的回合数
+    parser.add_argument('--gamma',default=0.99,type=float,help="discounted factor")
-        self.test_eps = 30  # 测试的回合数
+    parser.add_argument('--epsilon_start',default=0.95,type=float,help="initial value of epsilon")
-        ################################################################################
+    parser.add_argument('--epsilon_end',default=0.01,type=float,help="final value of epsilon")
-
+    parser.add_argument('--epsilon_decay',default=500,type=int,help="decay rate of epsilon")
-        ################################## 算法超参数 ###################################
+    parser.add_argument('--lr',default=0.0001,type=float,help="learning rate")
-        self.gamma = 0.95  # 强化学习中的折扣因子
+    parser.add_argument('--memory_capacity',default=100000,type=int,help="memory capacity")
-        self.epsilon_start = 0.95  # e-greedy策略中初始epsilon
+    parser.add_argument('--batch_size',default=64,type=int)
-        self.epsilon_end = 0.01  # e-greedy策略中的终止epsilon
+    parser.add_argument('--target_update',default=2,type=int)
-        self.epsilon_decay = 500  # e-greedy策略中epsilon的衰减率
+    parser.add_argument('--hidden_dim',default=256,type=int)
-        self.lr = 0.0001  # 学习率
+    parser.add_argument('--device',default='cpu',type=str,help="cpu or cuda") 
-        self.memory_capacity = 100000  # 经验回放的容量
+    parser.add_argument('--result_path',default=curr_path + "/outputs/" + parser.parse_args().env_name + \
-        self.batch_size = 64  # mini-batch SGD中的批量大小
+            '/' + curr_time + '/results/' )
-        self.target_update = 2  # 目标网络的更新频率
+    parser.add_argument('--model_path',default=curr_path + "/outputs/" + parser.parse_args().env_name + \
-        self.hidden_dim = 256  # 网络隐藏层
+            '/' + curr_time + '/models/' ) # path to save models
-        ################################################################################
+    parser.add_argument('--save_fig',default=True,type=bool,help="if save figure or not")           
-
+    args = parser.parse_args()                          
-        ################################# 保存结果相关参数 ##############################
+    return args
-        self.result_path = curr_path + "/outputs/" + self.env_name + \
-            '/' + curr_time + '/results/'  # 保存结果的路径
-        self.model_path = curr_path + "/outputs/" + self.env_name + \
-            '/' + curr_time + '/models/'  # 保存模型的路径
-        self.save = True # 是否保存图片
-        ################################################################################
         
         
 def env_agent_config(cfg,seed=1):
@@ -65,8 +59,8 @@ def env_agent_config(cfg,seed=1):
     return env,agent
 
 def train(cfg,env,agent):
-    print('开始训练!')
+    print('Start training!')
-    print(f'环境：{cfg.env_name}, 算法：{cfg.algo_name}, 设备：{cfg.device}')
+    print(f'Env:{cfg.env_name}, Algorithm:{cfg.algo_name}, Device:{cfg.device}')
     rewards = [] # 记录所有回合的奖励
     ma_rewards = []  # 记录所有回合的滑动平均奖励
     for i_ep in range(cfg.train_eps):
@@ -84,20 +78,19 @@ def train(cfg,env,agent):
         if i_ep % cfg.target_update == 0:
             agent.target_net.load_state_dict(agent.policy_net.state_dict())
         if (i_ep+1)%10 == 0: 
-            print(f'回合：{i_ep+1}/{cfg.train_eps}，奖励：{ep_reward}')
+            print(f'Env:{i_ep+1}/{cfg.train_eps}, Reward:{ep_reward:.2f}')
         rewards.append(ep_reward)
         if ma_rewards:
             ma_rewards.append(
                 0.9*ma_rewards[-1]+0.1*ep_reward)
         else:
             ma_rewards.append(ep_reward)   
-    print('完成训练！')
+    print('Finish training!')
-    env.close()
     return rewards,ma_rewards
 
 def test(cfg,env,agent):
-    print('开始测试!')
+    print('Start testing')
-    print(f'环境：{cfg.env_name}, 算法：{cfg.algo_name}, 设备：{cfg.device}')
+    print(f'Env:{cfg.env_name}, Algorithm:{cfg.algo_name}, Device:{cfg.device}')
     ############# 由于测试不需要使用epsilon-greedy策略，所以相应的值设置为0 ###############
     cfg.epsilon_start = 0.0  # e-greedy策略中初始epsilon
     cfg.epsilon_end = 0.0  # e-greedy策略中的终止epsilon
@@ -120,25 +113,24 @@ def test(cfg,env,agent):
             ma_rewards.append(ma_rewards[-1]*0.9+ep_reward*0.1)
         else:
             ma_rewards.append(ep_reward)
-        print(f"回合：{i_ep+1}/{cfg.test_eps}，奖励：{ep_reward:.1f}")
+        print(f"Epside:{i_ep+1}/{cfg.test_eps}, Reward:{ep_reward:.1f}")
-    print('完成测试！')
+    print('Finish testing!')
-    env.close()
     return rewards,ma_rewards  
 
 if __name__ == "__main__":
-    cfg = Config()
+    cfg = get_args()
-    # 训练
+    print(cfg.device)
-    env, agent = env_agent_config(cfg)
+    # training
+    env,agent = env_agent_config(cfg,seed=1)
     rewards, ma_rewards = train(cfg, env, agent)
-    make_dir(cfg.result_path, cfg.model_path)  # 创建保存结果和模型路径的文件夹
+    make_dir(cfg.result_path, cfg.model_path)
-    agent.save(path=cfg.model_path)  # 保存模型
+    save_args(cfg)
-    save_results(rewards, ma_rewards, tag='train',
+    agent.save(path=cfg.model_path)
-                 path=cfg.result_path)  # 保存结果
+    save_results(rewards, ma_rewards, tag='train', path=cfg.result_path)
-    plot_rewards(rewards, ma_rewards, cfg, tag="train")  # 画出结果
+    plot_rewards(rewards, ma_rewards, cfg, tag="train")  
-    # 测试
+    # testing
-    env, agent = env_agent_config(cfg)
+    env,agent = env_agent_config(cfg,seed=10)
-    agent.load(path=cfg.model_path)  # 导入模型
+    agent.load(path=cfg.model_path)
-    rewards, ma_rewards = test(cfg, env, agent)
+    rewards,ma_rewards = test(cfg,env,agent)
-    save_results(rewards, ma_rewards, tag='test',
+    save_results(rewards,ma_rewards,tag = 'test',path = cfg.result_path)
-                 path=cfg.result_path)  # 保存结果
+    plot_rewards(rewards, ma_rewards, cfg, tag="test")  
-    plot_rewards(rewards, ma_rewards, cfg, tag="test")  # 画出结果

codes/PPO/task0.py

@@ -16,7 +16,7 @@ curr_time = datetime.datetime.now().strftime("%Y%m%d-%H%M%S")  # 获取当前时
 class Config:
     def __init__(self) -> None:
         ################################## 环境超参数 ###################################
-        self.algo_name = "DQN"  # 算法名称
+        self.algo_name = "PPO"  # 算法名称
         self.env_name = 'CartPole-v0' # 环境名称
         self.continuous = False # 环境是否为连续动作
         self.device = torch.device("cuda" if torch.cuda.is_available() else "cpu")  # 检测GPU

codes/common/utils.py

@@ -5,7 +5,7 @@ Author: John
 Email: johnjim0816@gmail.com
 Date: 2021-03-12 16:02:24
 LastEditor: John
-LastEditTime: 2022-07-13 22:15:46
+LastEditTime: 2022-07-20 23:53:34
 Discription: 
 Environment: 
 '''
@@ -14,6 +14,7 @@ import numpy as np
 from pathlib import Path
 import matplotlib.pyplot as plt
 import seaborn as sns
+import json
 
 from matplotlib.font_manager import FontProperties  # 导入字体模块
 
@@ -101,11 +102,8 @@ def del_empty_dir(*paths):
 
 def save_args(args):
     # save parameters    
-    argsDict = args.__dict__
+    args_dict = vars(args)   
-    with open(args.result_path+'params.txt', 'w') as f:
+    with open(args.result_path+'params.json', 'w') as fp:
-        f.writelines('------------------ start ------------------' + '\n')
+        json.dump(args_dict, fp)   
-        for eachArg, value in argsDict.items():
-            f.writelines(eachArg + ' : ' + str(value) + '\n')
-        f.writelines('------------------- end -------------------')     
     print("Parameters saved!")
     

notebooks/common/multiprocessing_env.py

@@ -0,0 +1,153 @@
+# 该代码来自 openai baseline，用于多线程环境
+# https://github.com/openai/baselines/tree/master/baselines/common/vec_env
+
+import numpy as np
+from multiprocessing import Process, Pipe
+
+def worker(remote, parent_remote, env_fn_wrapper):
+    parent_remote.close()
+    env = env_fn_wrapper.x()
+    while True:
+        cmd, data = remote.recv()
+        if cmd == 'step':
+            ob, reward, done, info = env.step(data)
+            if done:
+                ob = env.reset()
+            remote.send((ob, reward, done, info))
+        elif cmd == 'reset':
+            ob = env.reset()
+            remote.send(ob)
+        elif cmd == 'reset_task':
+            ob = env.reset_task()
+            remote.send(ob)
+        elif cmd == 'close':
+            remote.close()
+            break
+        elif cmd == 'get_spaces':
+            remote.send((env.observation_space, env.action_space))
+        else:
+            raise NotImplementedError
+
+class VecEnv(object):
+    """
+    An abstract asynchronous, vectorized environment.
+    """
+    def __init__(self, num_envs, observation_space, action_space):
+        self.num_envs = num_envs
+        self.observation_space = observation_space
+        self.action_space = action_space
+
+    def reset(self):
+        """
+        Reset all the environments and return an array of
+        observations, or a tuple of observation arrays.
+        If step_async is still doing work, that work will
+        be cancelled and step_wait() should not be called
+        until step_async() is invoked again.
+        """
+        pass
+
+    def step_async(self, actions):
+        """
+        Tell all the environments to start taking a step
+        with the given actions.
+        Call step_wait() to get the results of the step.
+        You should not call this if a step_async run is
+        already pending.
+        """
+        pass
+
+    def step_wait(self):
+        """
+        Wait for the step taken with step_async().
+        Returns (obs, rews, dones, infos):
+         - obs: an array of observations, or a tuple of
+                arrays of observations.
+         - rews: an array of rewards
+         - dones: an array of "episode done" booleans
+         - infos: a sequence of info objects
+        """
+        pass
+
+    def close(self):
+        """
+        Clean up the environments' resources.
+        """
+        pass
+
+    def step(self, actions):
+        self.step_async(actions)
+        return self.step_wait()
+
+    
+class CloudpickleWrapper(object):
+    """
+    Uses cloudpickle to serialize contents (otherwise multiprocessing tries to use pickle)
+    """
+    def __init__(self, x):
+        self.x = x
+    def __getstate__(self):
+        import cloudpickle
+        return cloudpickle.dumps(self.x)
+    def __setstate__(self, ob):
+        import pickle
+        self.x = pickle.loads(ob)
+
+        
+class SubprocVecEnv(VecEnv):
+    def __init__(self, env_fns, spaces=None):
+        """
+        envs: list of gym environments to run in subprocesses
+        """
+        self.waiting = False
+        self.closed = False
+        nenvs = len(env_fns)
+        self.nenvs = nenvs
+        self.remotes, self.work_remotes = zip(*[Pipe() for _ in range(nenvs)])
+        self.ps = [Process(target=worker, args=(work_remote, remote, CloudpickleWrapper(env_fn)))
+            for (work_remote, remote, env_fn) in zip(self.work_remotes, self.remotes, env_fns)]
+        for p in self.ps:
+            p.daemon = True # if the main process crashes, we should not cause things to hang
+            p.start()
+        for remote in self.work_remotes:
+            remote.close()
+
+        self.remotes[0].send(('get_spaces', None))
+        observation_space, action_space = self.remotes[0].recv()
+        VecEnv.__init__(self, len(env_fns), observation_space, action_space)
+
+    def step_async(self, actions):
+        for remote, action in zip(self.remotes, actions):
+            remote.send(('step', action))
+        self.waiting = True
+
+    def step_wait(self):
+        results = [remote.recv() for remote in self.remotes]
+        self.waiting = False
+        obs, rews, dones, infos = zip(*results)
+        return np.stack(obs), np.stack(rews), np.stack(dones), infos
+
+    def reset(self):
+        for remote in self.remotes:
+            remote.send(('reset', None))
+        return np.stack([remote.recv() for remote in self.remotes])
+
+    def reset_task(self):
+        for remote in self.remotes:
+            remote.send(('reset_task', None))
+        return np.stack([remote.recv() for remote in self.remotes])
+
+    def close(self):
+        if self.closed:
+            return
+        if self.waiting:
+            for remote in self.remotes:            
+                remote.recv()
+        for remote in self.remotes:
+            remote.send(('close', None))
+        for p in self.ps:
+            p.join()
+            self.closed = True
+            
+    def __len__(self):
+        return self.nenvs