#coding:utf--8

#https://www.cnblogs.com/cmnz/p/6986979.html

#https://blog.csdn.net/uuihoo/article/details/79848726

import struct

import numpy as np

a = np.arange(3*4, dtype=np.int32).reshape((3,4))

print(a)

with open('sample_struct.dat','wb') as f:

    for row in range(3):

        for col in range(4):

            sn=struct.pack('i',a[row][col]) #序列化,i表示整数，f表示实数,?表示逻辑值

            f.write(sn)

b = np.zeros((3,4), dtype=np.int32)

with open('sample_struct.dat','rb') as f:

    for row in range(3):

        for col in range(4):

            sn=f.read(4)

            b[row][col],=struct.unpack('i',sn)  #使用指定格式反序列化

print(b)