Cython：在没有NumPy数组的情况下创建内存视图？

Since I found memory-views handy and fast, I try to avoid creating NumPy arrays in cython and work with the views of the given arrays. However, sometimes it cannot be avoided, not to alter an existing array but create a new one. In upper functions this is not noticeable, but in often called subroutines it is. Consider the following functionSince I found memory-views handy and fast, I tr