python 大小端数据转换

"6fe28c0ab6f1b372c1a6a246ae63f74f931e8365e15a089c68d6190000000000".decode('hex')[::-1].encode('hex_codec')


#=> 000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f