Crypto Random get_random_bytes is not working in py3 as it did in py2

Question

This code used to work in py2. In py3 I get this:

Here is the code:

from Crypto import Random
import os

def generate_random_bytes(length):
    return Random.get_random_bytes(length)
    #return bytearray(os.urandom(length))  I tried this line but got the same result

def generate_server_id():
    """Generates 20 random hex characters"""
    print(generate_random_bytes(10))
    print(ord(c) for c in generate_random_bytes(10))
    return "".join("%02x" % ord(c) for c in generate_random_bytes(10))

Answer 1

Just replace ord(c) with c, in Py3 a byte array item is already an integer instead of a character, so you don't need the conversion.

You may want to rewrite it like this, in order to make it work on both versions:

def generate_server_id():
    """Generates 20 random hex characters"""
    try:
        return "".join("%02x" % ord(c) for c in generate_random_bytes(10))
    except TypeError:
        return "".join("%02x" % c for c in generate_random_bytes(10))