不太复杂,或者我希望如此.我有一个256位十六进制整数编码为大端,我需要转换为小端.Python的struct模块通常就足够了,但是官方文档没有列出的格式,其大小甚至接近我需要的格式.
使用struct的非长度特定类型(虽然我可能这样做错了)似乎不起作用:
>> x = 'ffffffffffffffffffffffffffffffffffffffffffffffffffffffff00000000'
>> y = struct.unpack('>64s', x)[0] # Unpacking as big-endian
>> z = struct.pack('<64s', y) # Repacking as little-endian
>> print z
'ffffffffffffffffffffffffffffffffffffffffffffffffffffffff00000000'
示例代码(应该发生什么):
>> x = 'ffffffffffffffffffffffffffffffffffffffffffffffffffffffff00000000'
>> y = endianSwap(x)
>> print y
'00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff'