OpenAI Gym CartPole - Deep Q-Learning (create net)

net.py

class Net(nn.Module):
    def __init__(self, n_states, n_actions, n_hidden):
        super(Net, self).__init__()

        # 輸入層 (state) 到隱藏層，隱藏層到輸出層 (action)
        self.fc1 = nn.Linear(n_states, n_hidden)
        self.out = nn.Linear(n_hidden, n_actions)

    def forward(self, x):
        x = self.fc1(x)
        x = F.relu(x) # ReLU activation
        actions_value = self.out(x)
        return actions_value