DeprecationWarning: `np.float` is a deprecated alias for the builtin `float`. To silence this warning, use `float` by itself. Doing this will not modify any behavior and is safe. If you specifically wanted the numpy scalar type, use `np.float64` here.
Deprecated in NumPy 1.20; for more details and guidance: https://numpy.org/devdocs/release/1.20.0-notes.html#deprecations
看了一个博主解释了一下：
弃用警告：np.float是内置float的不推荐别名。要去除这个Warning，需要单独使用float
人话：np.float是将要被弃用的，可以用float替代。
即
改为
