python-3.x - “发生异常：迁移到 stable_baselines3 时，AttributeError 'list' 对象没有属性 'get'”
问题描述
我已经在 stable_baselines 中进行了试验，效果不错，并且一直想在 stable_baselines3 上进行尝试。
我正在使用 A2C 模型来训练库存环境。使用了目前正在使用 stable_baselines 的自定义环境。我在训练过程中看到了不稳定，并希望迁移到 stable_baselines3 以防万一。
def train_A2C(env_train, model_name,timesteps = 50000, i=0 ):
start = time.time()
# policy_kwargs = dict(net_arch=[128, 128])
policy_kwargs=dict(optimizer_class=RMSpropTFLike)
model = A2C(MlpPolicy,env_train,verbose = 1,tensorboard_log='./tensorboard/tensorboard_A2C/',
learning_rate =0.0001, vf_coef = 0.05, ent_coef = 0.005, policy_kwargs=policy_kwargs)
model.learn(total_timesteps = timesteps,tb_log_name = f"A2C_{i}")
end = time.time()
model.save(f'{config.TRAINED_MODEL_DIR}/{model_name}')
print(f'Training Time A2C : ', (end - start) /60, ' minutes')
return model
自定义环境如下。调试时，在环境中的第一个“步骤”之后立即弹出错误。可能是因为退货问题。我确实将状态的返回类型更改为 np.array 并且问题没有解决。
STOCK_DIM = 422 # INITIAL_BALANCE, Amount_of_shares, 60 days * (Norm_close, 1m/2m/3m/1y ret, macd,rsi)
INITIAL_ACCOUNT_BALANCE = 1000000
TRANSACTION_FEE_PERCENT = 0.01
REWARD_SCALING = 1e-5
HMAX_NORMALIZE = 100
N = config.PREV_DATA_POINTS
class StockEnv_Train(gym.Env):
def __init__(self,df,day = 374):
# day set to 260 since we need to account for the annual returns that only start around 252 days,
# macd only starts from 254
# we add 63 days to this to account for the historical data
self.day = day
self.df = df
self.action_space = spaces.Box(low = -1,high = 1,shape =(1,) )
self.observation_space = spaces.Box(low = 0, high = np.inf, shape = (STOCK_DIM,))
self.terminal = False
self.state = [INITIAL_ACCOUNT_BALANCE] + [0] + self.df.iloc[self.day-N:self.day,1].tolist() + \
self.df.iloc[self.day-N:self.day,2].tolist() + self.df.iloc[self.day-N:self.day,3].tolist() + \
self.df.iloc[self.day-N:self.day,4].tolist() + self.df.iloc[self.day-N:self.day,5].tolist() + \
self.df.iloc[self.day-N:self.day,6].tolist() + self.df.iloc[self.day-N:self.day,7].tolist()
self.reward = 0
self.asset_memory = [INITIAL_ACCOUNT_BALANCE]
self.cost = 0
self.rewards_memory = []
self.trades = 0
self._seed()
def _sell_stock(self,action):
if self.state[1] > 0:
self.state[0] += (self.df.iloc[self.day,-1]*min(abs(action),self.state[1]) * \
(1- TRANSACTION_FEE_PERCENT)).item()
self.cost +=self.df.iloc[self.day,-1]*min(abs(action),self.state[1]) * \
TRANSACTION_FEE_PERCENT
self.state[1] -= (min(abs(action), self.state[1]))
self.trades+=1
else:
pass
def _buy_stock(self,action):
# perform buy action based on the sign of the action
available_amount = self.state[0] // self.df.iloc[self.day,-1]
# print('available_amount:{}'.format(available_amount))
#update balance
self.state[0] -= (self.df.iloc[self.day,-1]*min(available_amount, action)* \
(1+ TRANSACTION_FEE_PERCENT)).item()
self.state[1] += (min(available_amount, action))
self.cost+=self.df.iloc[self.day,-1]*min(available_amount, action)* \
TRANSACTION_FEE_PERCENT
self.trades+=1
def step(self,action):
self.terminal = self.day >= len(self.df.Date.unique()) - 1
if self.terminal:
plt.plot(self.asset_memory,'r')
plt.savefig('results/account_value_train.png')
plt.close()
df_total_value = pd.DataFrame(self.asset_memory)
df_total_value.to_csv('results/account_value_train.csv')
df_total_value.columns = ['account_value']
df_total_value['daily_return'] = df_total_value.pct_change(1)
df_rewards = pd.DataFrame(self.rewards_memory)
return self.state, self.reward*REWARD_SCALING,self.terminal, {}
else:
# print(np.array(self.state[1:29]))
action = action * HMAX_NORMALIZE
#actions = (actions.astype(int))
begin_total_asset = self.state[0]+ self.state[1]*self.df.iloc[self.day,-1]
if action<0:
self._sell_stock( action)
else:
self._buy_stock(action)
self.day += 1
#load next state
# print("stock_shares:{}".format(self.state[29:]))
self.state = [self.state[0]] + [self.state[1]] + self.df.iloc[self.day-N:self.day,1].tolist() + \
self.df.iloc[self.day-N:self.day,2].tolist() + self.df.iloc[self.day-N:self.day,3].tolist() + \
self.df.iloc[self.day-N:self.day,4].tolist() + self.df.iloc[self.day-N:self.day,5].tolist() + \
self.df.iloc[self.day-N:self.day,6].tolist() + self.df.iloc[self.day-N:self.day,7].tolist()
end_total_asset = self.state[0]+ self.state[1]*self.df.iloc[self.day,-1]
try:
self.asset_memory.append(end_total_asset.item())
except:
self.asset_memory.append(end_total_asset)
#print("end_total_asset:{}".format(end_total_asset))
self.reward = end_total_asset - begin_total_asset
self.rewards_memory.append(self.reward)
self.reward = self.reward*REWARD_SCALING
return np.array([self.state]),np.array([self.reward]),self.terminal,{}
def reset(self):
self.asset_memory = [INITIAL_ACCOUNT_BALANCE]
self.day = 374
self.cost = 0
self.trades = 0
self.terminal = False
self.rewards_memory = []
self.state = [INITIAL_ACCOUNT_BALANCE] + [0] + self.df.iloc[self.day-N:self.day,1].tolist() + \
self.df.iloc[self.day-N:self.day,2].tolist() + self.df.iloc[self.day-N:self.day,3].tolist() + \
self.df.iloc[self.day-N:self.day,4].tolist() + self.df.iloc[self.day-N:self.day,5].tolist() + \
self.df.iloc[self.day-N:self.day,6].tolist() + self.df.iloc[self.day-N:self.day,7].tolist()
return self.state
def render(self,mode='human'):
return self.state
def _seed(self,seed=None):
self.np_random, seed = seeding.np_random(seed)
return [seed]
我得到的错误是在model.learn过程中：
发生异常：AttributeError 'list' object has no attribute 'get'