如果有列表列表，则只需要使用...

If you have a list of lists, you only needed to use ...

import numpy as np
...
npa = np.asarray(someListOfLists, dtype=np.float32)

为此 LINK /numpy文档中的strong> .您只需要在对asarray的调用中定义dtype.

per this LINK in the scipy / numpy documentation. You just needed to define dtype inside the call to asarray.