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AssertionError: group argument must be None for now python

im using PIR sensor to find out intruder is present or not. if intruder is present it will go to sleep for 1 min now i have to reset sleep time, for this im using thread but it shows assertion error, help me out, below is my code.

from threading import Thread, Event
import time

import RPi.GPIO as GPIO


class MyThread(Thread):
    def __ini(self, timeout=60):
        self.intruder_spotted = Event()
        self.timeout = timeout

        self.daemon = True

    def run(self):
        while True:
            if self.intruder_spotted.wait(self.timeout):
                self.intruder_spotted.clear()
                print("Intruder")
            else:
                print("No intruder")



t = MyThread(60)

GPIO.setmode(GPIO.BCM)
GPIO.setup(18,GPIO.IN)

try:
    t.start()
    while True:
        i=GPIO.input(18)
        if i==1:
            t.intruder_spotted.set()

        time.sleep(1)

except KeyboardInterrupt:
    GPIO.cleanup()
    exit(0)

need Update the int of the class my Thread. It's __init__ not __ini. And the call to the parent init with super

class MyThread(Thread): 
    def__init__(self, timeout=60):
    super(MyThread, self).__init__()
    self.intruder_spotted = Event()
    self.timeout = timeout
    self.daemon = True

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