我在这里所做的不是在这个类中返回输出？[关闭]

问：

我的朋友为我们在 main 中使用的代码创建了一个类，我们正在尝试调试它。我有限的经验和缺乏沟通让我感到困惑。代码如下：

任何需要的东西都在其他地方定义，所有需要的库都被导入

class NN:
    def __init__(self, data_path, n_hidden,epochs):
        # loading data set
        self.data_path = data_path
        self.data = pd.read_csv(data_path, nrows=1000).values
        self.xtr = self.data[:, 1:]
        self.ytr = self.data[:, 0]
        self.epochs = epochs

        # define network hyperparameters
        self.n_hidden = n_hidden
        self.n_input = self.xtr.shape[1]
        self.n_samples = self.xtr.shape[0]
        self.n_out = len(np.unique(self.ytr))
        self.accuracy = []
        self.accum_accuracy = 0
        self.alpha = 0.01
        self.yhat_max = 0

        # create weights of the network
        self.whi = np.random.uniform(-1, 1, size=(self.n_hidden,self.n_input))
        self.who = np.random.uniform(-1, 1, size=(self.n_out,self.n_hidden))

        # One-hot encoding
        self.ytr_hot = np.zeros((self.xtr.shape[0], self.n_samples))
        self.ytr_hot[np.arange(0, len(self.ytr)), self.ytr] = 1

    # data forward pass
    def forward_pass(self):
        for epoch in range(self.epochs):
            self.accum_accuracy = 0
            for i in range(self.n_samples):
                # hidden layer
                self.h_logit = np.dot(self.xtr[i, :], self.whi.T)
                self.hidden_out = sigmoid(self.h_logit)

                # output layer
                self.o_logit = np.dot(self.hidden_out,self.who.T)
                self.yhat = sigmoid(self.o_logit)

                # Append the max indices of the output layer and compute accumulated accuracy
                self.yhat_max = np.argmax(self.yhat)
                self.accum_accuracy += self.yhat_max == self.ytr[i]

                # Estimate the network error
                self.error = self.yhat - self.ytr_hot[i, :]
                self.who -= self.alpha * np.outer(self.error, self.hidden_out)

            self.accuracy.append(100*self.accum_accuracy/self.n_samples)
        return self.accuracy

四处搜索，弄乱代码，没有明确的方向。我期望准确性是输出。

发生的事情什么都不是。我将运行或调试代码，当我期望输出精度时，不会显示任何内容