rzab.py

from hashlib import sha1
import hmac
import binascii
import time
import struct

ploy = "..."
secret = binascii.unhexlify(b"...")

now = struct.pack(">Q", round(time.time() / 30))
hashed = hmac.new(secret, now, sha1)
out = hashed.digest()
idx = out[-1] & 15
totp = (struct.unpack(">i", out[idx : idx + 4])[0] & (2**31 - 1)) % (10**6)

print("https://zlgn.pl/view/dashboard?ploy=%s&loyal=%06d" % (ploy, totp))