【解决方案】解决paddlepaddle运行强化学习代码时TypeError: fc() got an unexpected keyword argument ‘is

• 1.背景介绍
• 2.解决方案

使用百度paddlepaddle2.3、parl1.1运行强化学习代码，但报了错误TypeError: fc() got an unexpected keyword argument ‘is_test’，报错信息如下：

Traceback (most recent call last):
  File "TrainMaze.py", line 167, in 
    train_test()
  File "TrainMaze.py", line 85, in train_test
    agent = MazeAgent(alg, obs_dim=OBS_DIM, act_dim=ACT_DIM)
  File "/home/my-mcpg/MazeAgent.py", line 17, in __init__
    super(MazeAgent, self).__init__(algorithm)
  File "/root/miniconda3/lib/python3.8/site-packages/parl/framework/agent_base.py", line 46, in __init__
    self.build_program()
  File "/home/my-mcpg/MazeAgent.py", line 30, in build_program
    self.act_prob = self.alg.define_predict(obs)
  File "/root/miniconda3/lib/python3.8/site-packages/parl/algorithms/policy_gradient.py", line 31, in define_predict
    return self.model.policy(obs)
  File "/home/my-mcpg/MazeModel.py", line 17, in policy
    out = self.fc1(obs)
  File "/root/miniconda3/lib/python3.8/site-packages/parl/layers/layer_wrappers.py", line 149, in __call__
    return layers.fc(
TypeError: fc() got an unexpected keyword argument 'is_test'

报错信息比较友好，都有提示。提示说在：/root/miniconda3/lib/python3.8/site-packages/parl/layers/layer_wrappers.py文件的第149行，有一个不期待的关键参数is_test。

使用vim编辑器打开定位的文件

vim /root/miniconda3/lib/python3.8/site-packages/parl/layers/layer_wrappers.py

查看文件行数

:set number

编辑文件，把末尾的is_test=False删掉，使用:wq!命令保存文件

:wq!

重新运行文件，发现问题解决，不再报错。