import sys
import time
import threading
import random


class C:
    def __del__(self):
        try:
            raise Exception(100)
        except:
            pass


sys.setcheckinterval(50)


def worker():
    c = C()
    while True:
        try:
            raise ValueError("xxxx")
        except:
            try:
                time.sleep(0.001)
            except:
                pass


for _ in range(20):
    t = threading.Thread(target=worker)
    t.daemon = True
    t.start()

time.sleep(0.1)
for i in range(10):
    x = i