import string
import random

from authentication.models import SystemUserProfile
from general_urls import base_user_gate_way_id

while (True):
    res = ''.join(random.choices(string.ascii_lowercase + string.digits, k=5))
    res = base_user_gate_way_id + res
    if not SystemUserProfile.objects.filter(user_gate_way_id=res).exists():
        break