Summary of methods in numpy

np.zeros And np.zeros_like The difference between ：

np.zeros Be similar to C Medium calloc, Predefined and used Dynamic memory allocation

np.zeros_like Be similar to C Medium malloc+memset,

When predefined Initialize memory directly , Using memory directly , The system will no longer reassign

Reference resources ：

python - Why the performance difference between numpy.zeros and numpy.zeros_like? - Stack Overflow