How to display a byte array as hex values

Question

>>> struct.pack(\'2I\',12, 30)
b\'\\x0c\\x00\\x00\\x00\\x1e\\x00\\x00\\x00\'    
>>> struct.pack(\'2I\',12, 31)
b\'\\x0c\\x00\\x00\\x00\\x1f\\x00\\         


        

Answer 1

In Python 3.7 bytes objects don't have an encode() method. The following code doesn't work anymore.

import struct

hex_str = struct.pack('2I',12, 30).encode('hex')

Instead of encode(), Python 3.7 code should use the hex() method, introduced in Python 3.5.

import struct

# hex_str will contain the '0c0000001e000000' string.
hex_str = struct.pack('2I',12, 30).hex()