randcrackex1.py

import random, time
from randcrack import RandCrack
import string

random_id_characters = string.ascii_letters + string.digits
random.seed(time.time())

rc = RandCrack()

for i in range(624):
    rc.submit(random.getrandbits(32))

def gen_random_id():
    return ''.join(random.choice(random_id_characters) for i in range(32))

def gen_randcrack_id():
    return ''.join( rc.predict_choice(random_id_characters) for i in range(32))

print("Random result:  {}\nCracker result: {}".format(random.randrange(0, 4294967295), rc.predict_randrange(0, 4294967295)))
print("Random result:  {}\nCracker result: {}".format( gen_random_id(), gen_randcrack_id() ))

test the underlying C module

def test2():
    rins = random._random.Random()
    rins.seed(None)  #this trigs linux's getrandom
    for i in range(32):
        rv = rins.getrandbits(6)
        state = rins.getstate()
        print("{}/{}: rv={} ".format(state[-1], len(state), rv))

genrand_uint32 is called here with k=6
https://github.com/python/cpython/blob/dbe60ee09dc5a624cfb78dff61ecf050a5b3f105/Modules/_randommodule.c#L489

Altough we never call random.seed explicitly but _random.seed(None) is called by default.
https://github.com/python/cpython/blob/dbe60ee09dc5a624cfb78dff61ecf050a5b3f105/Lib/random.py#L125
https://github.com/python/cpython/blob/dbe60ee09dc5a624cfb78dff61ecf050a5b3f105/Lib/random.py#L168

it's actually linux's getrandom system call. That fills the init state Mersenne Twister RNG, which is 624 uint32s. That brings great randomness.
https://github.com/python/cpython/blob/dbe60ee09dc5a624cfb78dff61ecf050a5b3f105/Modules/_randommodule.c#L276
https://github.com/python/cpython/blob/dbe60ee09dc5a624cfb78dff61ecf050a5b3f105/Modules/_randommodule.c#L204