when I was testing multithreading, I found that a write module could not correctly respond to ctrl + c under multithreading. After my test, it should be caused by the paste module. How to deal with this situation?

import sys
import threading
import time

import bottle

HttpThread1 = None
HttpThread2 = None


@bottle.route("/hello")
def hello():
    return "Hello World!"


def server1():
    bottle.run(server="paste", port=8081)


def server2():
    bottle.run(server="paste", port=8082)


def info():
    print(threading.active_count())


try:
    HttpThread1 = threading.Thread(target=server1, args=())
    HttpThread1.setDaemon(True)
    HttpThread1.start()

    HttpThread2 = threading.Thread(target=server2, args=())
    HttpThread2.setDaemon(True)
    HttpThread2.start()

    while True:
        info()
        time.sleep(1)
except KeyboardInterrupt:
    sys.exit(1)

my current solution is to use the multiprocessing library to solve the program exit problem.