to check the results of sha256() in hashlib and pycrypto are same

compare_sha256.py

from hashlib import sha256
from Crypto.Hash import SHA256
from os import urandom

count = 0
while True:
    value = urandom(20)
    crypt = SHA256.new()
    crypt.update(value)
    assert crypt.hexdigest() == sha256(value).hexdigest()
    count += 1
    if count % 10000 == 0:
        print('count:', count, '\r', end='')