TypeError：必须是实数，而不是方法

Question

我正在 YouTube 上关注此指南 Python + PyTorch + Pygame 强化学习 – 训练 AI 玩贪吃蛇 并收到以下错误。

我已将代码上传到 GitHub：这里

pygame 2.5.2 (SDL 2.28.3, Python 3.11.5)
Hello from the pygame community. https://www.pygame.org/contribute.html
Traceback (most recent call last):
  File "/Users/dhruvyadav/Desktop/Projects/AI-Snake-Game/agent.py", line 142, in <module>
    train()
  File "/Users/dhruvyadav/Desktop/Projects/AI-Snake-Game/agent.py", line 120, in train
    agent.train_short_memory(state_old, final_move, reward, state_new, done)
  File "/Users/dhruvyadav/Desktop/Projects/AI-Snake-Game/agent.py", line 84, in train_short_memory
    self.trainer.train_step(state, action, reward, next_state, done)
  File "/Users/dhruvyadav/Desktop/Projects/AI-Snake-Game/model.py", line 34, in train_step
    next_state = torch.tensor(next_state, dtype=torch.float)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: must be real number, not method

Answer 1

您必须将以下代码摘录中的

state_new = agent.get_state

更改为

state_new = agent.get_state()

（链接到 github）。

    while True:
        # Get old state
        state_old = agent.get_state(game)
        
        # Get move based on current state
        final_move = agent.get_action(state_old)

        # Perform the move and get the new state
        reward, done, score = game.play_step(final_move)
        state_new = agent.get_state()

如果没有括号，你给出的是方法而不是方法的结果。