打乱数据

# 创建数据读取器train_reader
    def train_reader(train_data_path):
        def reader():
            with open(train_data_path, 'r') as f:
                lines = f.readlines()
                # 打乱数据
                np.random.shuffle(lines)
                for line in lines:
                    data, label = line.split('\t')
                    yield data, label