python学习相关知识点

1.ndarray中,添加行或列:https://blog.csdn.net/lishuandao/article/details/52444288

2.numpy中ndarray数组拼接方法介绍:https://blog.csdn.net/zyl1042635242/article/details/43162031

3.ndarray怎么求每一列元素的最大最小值,然后把每列的元素做归一化:

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