LSTM输入数据格式问题

Question

输入样本train_x1 标签train_y1
样本与标签都是（20000，10）
然后我reshape变成三维（20000，1，10）报错 求该如何修改格式
输入十个数值，输出十个数值。

train_x1 = np.reshape(train_x1, (train_x1.shape[0],1，train_x1.shape[1]))
train_y1 = np.reshape(train_y1, (train_y1.shape[0],1，train_y1.shape[1]))

model = Sequential()

model.add(LSTM(50, input_shape=(train_x1.shape[1], train_x1.shape[2])))

model.add(Dense(10))

model.compile(loss='mse', optimizer='adam')

model.fit(train_x1, train_y1, nb_epoch = 300, batch_size = 10)

model.save_weights('LSTM.model')