from sklearn.preprocessing import StandardScaler

def test():

    # 1. 准备数据
    data = [[90, 2, 10, 40],
            [60, 4, 15, 45],
            [75, 3, 13, 46]]

    # 2. 初始化标准化对象
    transformer = StandardScaler()

    # 3. 对原始特征进行变换
    data = transformer.fit_transform(data)

    # 4. 打印归一化后的结果
    print(data)




test()