NumPy字节交换

无涯教程已经看到，存储在计算机内存中的数据取决于CPU使用哪种体系结构，它可以是低位或高位。

numpy.ndarray.byteswap()

import numpy as np 
a = np.array([1, 256, 8755], dtype = np.int16) 

print 'Our array is:' 
print a  

print 'Representation of data in memory in hexadecimal form:'  
print map(hex,a)  
# byteswap() 函数通过传递 True 参数就地交换

print 'Applying byteswap() function:' 
print a.byteswap(True) 

print 'In hexadecimal form:' 
print map(hex,a) 
#我们可以看到正在交换的字节

Our array is:
[1 256 8755]

Representation of data in memory in hexadecimal form:
['0x1', '0x100', '0x2233']

Applying byteswap() function:
[256 1 13090]

In hexadecimal form:
['0x100', '0x1', '0x3322']